Fix line endings (CRLF -> LF) on all affected files.
This commit is contained in:
Christian Groessler
@@ -1,376 +1,376 @@
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;
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; Extended memory driver for 65816 based extra RAM. Driver works without
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; problems when statically linked.
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;
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; Marco van den Heuvel, 2015-12-01
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;
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.include "zeropage.inc"
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.include "em-kernel.inc"
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.include "em-error.inc"
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.macpack generic
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.macpack module
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; ------------------------------------------------------------------------
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; Header. Includes jump table
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module_header _c64_65816_emd
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; Driver signature
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.byte $65, $6d, $64 ; "emd"
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.byte EMD_API_VERSION ; EM API version number
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; Library reference
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.addr $0000
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; Jump table
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.addr INSTALL
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.addr UNINSTALL
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.addr PAGECOUNT
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.addr MAP
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.addr USE
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.addr COMMIT
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.addr COPYFROM
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.addr COPYTO
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; ------------------------------------------------------------------------
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; Data.
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.bss
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isnotscpu: .res 1 ; SuperCPU not present
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curpage: .res 1 ; Current page number
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curbank: .res 1 ; Current bank number (+1)
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bankcount: .res 1 ; Number of available banks (pages = banks * 256)
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window: .res 256 ; Memory "window"
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.code
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; ------------------------------------------------------------------------
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; INSTALL routine. Is called after the driver is loaded into memory. If
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; possible, check if the hardware is present and determine the amount of
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; memory available.
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; Must return an EM_ERR_xx code in a/x.
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;
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INSTALL:
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sei
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clc
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sed
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lda #$99
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adc #$01 ; on 65C02, 65SC02, 65CE02, 65802 and 65816 sets the zero flag correctly
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cld
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bne @not_present
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clc
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.P816
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sep #$01 ; nop #$01 on 65C02/65SC02 and lda ($01,s),y on 65CE02
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.P02
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bcc @not_present
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lda $d0bc
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and #$80
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sta isnotscpu
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lda $07e8
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pha ; save value incase it was used somewhere else
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ldx #$ff
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@fillloop: ; fill from top (bank 255) to bottom
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txa
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pha
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.P816
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plb ; pull dbr
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.P02
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stx $07e8
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dex
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cpx #$ff
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bne @fillloop
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inx
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@compareloop: ; check from bottom to top
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txa
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pha
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.P816
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plb
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.P02
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cmp $07e8
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bne @found_pages
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.P816
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inc
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.P02
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sta $07e8
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cmp $07e8
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bne @found_pages
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inx
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bne @compareloop
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@found_pages:
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dex
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lda #$00
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pha
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.P816
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plb
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.P02
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pla
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sta $07e8
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cli
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lda isnotscpu
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bne @noextradex
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dex
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@noextradex:
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stx bankcount
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lda #<EM_ERR_OK
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ldx #>EM_ERR_OK
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rts
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@not_present:
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cli
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lda #<EM_ERR_NO_DEVICE
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ldx #>EM_ERR_NO_DEVICE
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; rts ; Run into UNINSTALL instead
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; ------------------------------------------------------------------------
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; UNINSTALL routine. Is called before the driver is removed from memory.
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; Can do cleanup or whatever. Must not return anything.
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;
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UNINSTALL:
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rts
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; ------------------------------------------------------------------------
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; PAGECOUNT: Return the total number of available pages in a/x.
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;
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PAGECOUNT:
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lda #$00 ; a whole bank is either usable or not
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ldx bankcount
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rts
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; ------------------------------------------------------------------------
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; MAP: Map the page in a/x into memory and return a pointer to the page in
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; a/x. The contents of the currently mapped page (if any) may be discarded
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; by the driver.
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;
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MAP: sta curpage ; Remember the new page
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stx curbank ; Remember the new bank
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sta ptr2+1 ; src address low
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lda #$00
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sta ptr2 ; src address high
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inx
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ldy isnotscpu ; check if not scpu
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bne @notscpu
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inx
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@notscpu:
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stx tmp2 ; src bank
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sta tmp1 ; dst bank
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sta ptr3+1 ; length high
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lda #$ff
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sta ptr3 ; length low
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lda #<window
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sta ptr1 ; dst address low
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ldx #>window
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stx ptr1+1 ; dst address high
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jsr transfer
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rts
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; ------------------------------------------------------------------------
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; USE: Tell the driver that the window is now associated with a given page.
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USE: sta curpage ; Remember the page
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stx curbank ; Remember the bank
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lda #<window
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ldx #>window ; Return the window
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rts
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; ------------------------------------------------------------------------
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; COMMIT: Commit changes in the memory window to extended storage.
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COMMIT: lda curpage ; Get the current page
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sta ptr1+1 ; dst high
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ldx #$00
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stx ptr1 ; dst low
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lda #<window
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sta ptr2 ; src low
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lda #>window
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sta ptr2+1 ; src high
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stx ptr3+1 ; length high
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lda #$ff
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sta ptr3 ; length low
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stx tmp2 ; src bank
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ldy curbank ; Get the current bank
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iny
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ldx isnotscpu
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bne @notascpu
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iny
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@notascpu:
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sty tmp1 ; dst bank
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jsr transfer
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rts
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; ------------------------------------------------------------------------
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; COPYFROM: Copy from extended into linear memory. A pointer to a structure
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; describing the request is passed in a/x.
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; The function must not return anything.
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;
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COPYFROM:
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sta ptr4
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stx ptr4+1 ; Save the passed em_copy pointer
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ldy #EM_COPY::COUNT+1 ; start at the end of the struct
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lda (ptr4),y ; get high byte of count
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tax
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dey
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lda (ptr4),y ; get low byte of count
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bne @nodex
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dex
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@nodex:
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.P816
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dec
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.P02
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sta ptr3 ; length low
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stx ptr3+1 ; length high
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dey
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lda (ptr4),y ; get bank
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.P816
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inc
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.P02
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ldx isnotscpu
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bne @notscpu64
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.P816
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inc
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.P02
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@notscpu64:
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sta tmp2 ; src bank
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dey
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lda (ptr4),y ; get page
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sta ptr2+1 ; src high
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dey
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lda (ptr4),y ; get offset in page
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sta ptr2 ; src low
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dey
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lda (ptr4),y ; get memory buffer high
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sta ptr1+1 ; dst high
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dey
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lda (ptr4),y ; get memory buffer low
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sta ptr1 ; dst low
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lda #$00
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sta tmp1 ; dst bank
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jsr transfer
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rts
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; ------------------------------------------------------------------------
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; COPYTO: Copy from linear into extended memory. A pointer to a structure
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; describing the request is passed in a/x.
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; The function must not return anything.
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;
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COPYTO: sta ptr4
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stx ptr4+1 ; Save the passed em_copy pointer
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ldy #EM_COPY::COUNT+1 ; start at the end of the struct
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lda (ptr4),y ; get high byte of count
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tax
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dey
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lda (ptr4),y ; get low byte of count
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bne @nodex2
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dex
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@nodex2:
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.P816
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dec
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.P02
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sta ptr3 ; length low
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txa
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sta ptr3+1 ; length high
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dey
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lda (ptr4),y ; get bank
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.P816
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inc
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.P02
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ldx isnotscpu
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bne @notascpu64
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.P816
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inc
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.P02
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@notascpu64:
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sta tmp1 ; dst bank
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dey
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lda (ptr4),y ; get page
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sta ptr1+1 ; dst high
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dey
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lda (ptr4),y ; get page offset
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sta ptr1 ; dst low
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dey
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lda (ptr4),y ; get memory buffer high
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sta ptr2+1 ; src low
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dey
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lda (ptr4),y ; get memory buffer low
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sta ptr2 ; src high
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lda #$00
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sta tmp2 ; src bank
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jsr transfer
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rts
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; ------------------------------------------------------------------------
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; Helper function for moving a block, the following is used:
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; ptr1: dst
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; ptr2: src
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; ptr3: length
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; tmp1: dst bank
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; tmp2: src bank
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transfer:
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.P816
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.A8
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.I8
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sei
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pha
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phx
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phy
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ldx tmp1 ; load srcbank
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stx @move+1 ; store srcbank in move + 1
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ldy tmp2 ; load dstbank
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sty @move+2 ; store dstbank in move + 2
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clc ; switch to native mode
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xce
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php ; save status bits
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rep #%00110000 ; set A and index to 16bit
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.A16
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.I16
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ldy ptr1
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ldx ptr2
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lda ptr3
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@move:
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mvn 0,0
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plp ; restore status bits
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.A8
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.I8
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lda #$00
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pha
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plb ; restore dbr
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sec
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xce ; switch to emul mode
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ply
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plx
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pla
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cli
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rts
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.P02
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||||
;
|
||||
; Extended memory driver for 65816 based extra RAM. Driver works without
|
||||
; problems when statically linked.
|
||||
;
|
||||
; Marco van den Heuvel, 2015-12-01
|
||||
;
|
||||
|
||||
.include "zeropage.inc"
|
||||
|
||||
.include "em-kernel.inc"
|
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.include "em-error.inc"
|
||||
|
||||
|
||||
.macpack generic
|
||||
.macpack module
|
||||
|
||||
|
||||
; ------------------------------------------------------------------------
|
||||
; Header. Includes jump table
|
||||
|
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module_header _c64_65816_emd
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|
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; Driver signature
|
||||
|
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.byte $65, $6d, $64 ; "emd"
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.byte EMD_API_VERSION ; EM API version number
|
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|
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; Library reference
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||||
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.addr $0000
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; Jump table
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.addr INSTALL
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.addr UNINSTALL
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.addr PAGECOUNT
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.addr MAP
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.addr USE
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.addr COMMIT
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.addr COPYFROM
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.addr COPYTO
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||||
|
||||
; ------------------------------------------------------------------------
|
||||
; Data.
|
||||
|
||||
.bss
|
||||
isnotscpu: .res 1 ; SuperCPU not present
|
||||
curpage: .res 1 ; Current page number
|
||||
curbank: .res 1 ; Current bank number (+1)
|
||||
bankcount: .res 1 ; Number of available banks (pages = banks * 256)
|
||||
window: .res 256 ; Memory "window"
|
||||
|
||||
.code
|
||||
|
||||
; ------------------------------------------------------------------------
|
||||
; INSTALL routine. Is called after the driver is loaded into memory. If
|
||||
; possible, check if the hardware is present and determine the amount of
|
||||
; memory available.
|
||||
; Must return an EM_ERR_xx code in a/x.
|
||||
;
|
||||
|
||||
INSTALL:
|
||||
sei
|
||||
clc
|
||||
sed
|
||||
lda #$99
|
||||
adc #$01 ; on 65C02, 65SC02, 65CE02, 65802 and 65816 sets the zero flag correctly
|
||||
cld
|
||||
bne @not_present
|
||||
clc
|
||||
.P816
|
||||
sep #$01 ; nop #$01 on 65C02/65SC02 and lda ($01,s),y on 65CE02
|
||||
.P02
|
||||
bcc @not_present
|
||||
lda $d0bc
|
||||
and #$80
|
||||
sta isnotscpu
|
||||
lda $07e8
|
||||
pha ; save value incase it was used somewhere else
|
||||
ldx #$ff
|
||||
@fillloop: ; fill from top (bank 255) to bottom
|
||||
txa
|
||||
pha
|
||||
.P816
|
||||
plb ; pull dbr
|
||||
.P02
|
||||
stx $07e8
|
||||
dex
|
||||
cpx #$ff
|
||||
bne @fillloop
|
||||
inx
|
||||
@compareloop: ; check from bottom to top
|
||||
txa
|
||||
pha
|
||||
.P816
|
||||
plb
|
||||
.P02
|
||||
cmp $07e8
|
||||
bne @found_pages
|
||||
.P816
|
||||
inc
|
||||
.P02
|
||||
sta $07e8
|
||||
cmp $07e8
|
||||
bne @found_pages
|
||||
inx
|
||||
bne @compareloop
|
||||
@found_pages:
|
||||
dex
|
||||
lda #$00
|
||||
pha
|
||||
.P816
|
||||
plb
|
||||
.P02
|
||||
pla
|
||||
sta $07e8
|
||||
cli
|
||||
lda isnotscpu
|
||||
bne @noextradex
|
||||
dex
|
||||
@noextradex:
|
||||
stx bankcount
|
||||
lda #<EM_ERR_OK
|
||||
ldx #>EM_ERR_OK
|
||||
rts
|
||||
@not_present:
|
||||
cli
|
||||
lda #<EM_ERR_NO_DEVICE
|
||||
ldx #>EM_ERR_NO_DEVICE
|
||||
; rts ; Run into UNINSTALL instead
|
||||
|
||||
|
||||
; ------------------------------------------------------------------------
|
||||
; UNINSTALL routine. Is called before the driver is removed from memory.
|
||||
; Can do cleanup or whatever. Must not return anything.
|
||||
;
|
||||
|
||||
UNINSTALL:
|
||||
rts
|
||||
|
||||
|
||||
; ------------------------------------------------------------------------
|
||||
; PAGECOUNT: Return the total number of available pages in a/x.
|
||||
;
|
||||
|
||||
PAGECOUNT:
|
||||
lda #$00 ; a whole bank is either usable or not
|
||||
ldx bankcount
|
||||
rts
|
||||
|
||||
; ------------------------------------------------------------------------
|
||||
; MAP: Map the page in a/x into memory and return a pointer to the page in
|
||||
; a/x. The contents of the currently mapped page (if any) may be discarded
|
||||
; by the driver.
|
||||
;
|
||||
|
||||
MAP: sta curpage ; Remember the new page
|
||||
stx curbank ; Remember the new bank
|
||||
|
||||
sta ptr2+1 ; src address low
|
||||
lda #$00
|
||||
sta ptr2 ; src address high
|
||||
inx
|
||||
ldy isnotscpu ; check if not scpu
|
||||
bne @notscpu
|
||||
inx
|
||||
@notscpu:
|
||||
stx tmp2 ; src bank
|
||||
|
||||
sta tmp1 ; dst bank
|
||||
|
||||
sta ptr3+1 ; length high
|
||||
lda #$ff
|
||||
sta ptr3 ; length low
|
||||
|
||||
lda #<window
|
||||
sta ptr1 ; dst address low
|
||||
ldx #>window
|
||||
stx ptr1+1 ; dst address high
|
||||
|
||||
jsr transfer
|
||||
|
||||
rts
|
||||
|
||||
; ------------------------------------------------------------------------
|
||||
; USE: Tell the driver that the window is now associated with a given page.
|
||||
|
||||
USE: sta curpage ; Remember the page
|
||||
stx curbank ; Remember the bank
|
||||
lda #<window
|
||||
ldx #>window ; Return the window
|
||||
rts
|
||||
|
||||
; ------------------------------------------------------------------------
|
||||
; COMMIT: Commit changes in the memory window to extended storage.
|
||||
|
||||
COMMIT: lda curpage ; Get the current page
|
||||
sta ptr1+1 ; dst high
|
||||
ldx #$00
|
||||
stx ptr1 ; dst low
|
||||
|
||||
lda #<window
|
||||
sta ptr2 ; src low
|
||||
lda #>window
|
||||
sta ptr2+1 ; src high
|
||||
|
||||
stx ptr3+1 ; length high
|
||||
lda #$ff
|
||||
sta ptr3 ; length low
|
||||
|
||||
stx tmp2 ; src bank
|
||||
ldy curbank ; Get the current bank
|
||||
iny
|
||||
ldx isnotscpu
|
||||
bne @notascpu
|
||||
iny
|
||||
@notascpu:
|
||||
sty tmp1 ; dst bank
|
||||
|
||||
jsr transfer
|
||||
|
||||
rts
|
||||
|
||||
; ------------------------------------------------------------------------
|
||||
; COPYFROM: Copy from extended into linear memory. A pointer to a structure
|
||||
; describing the request is passed in a/x.
|
||||
; The function must not return anything.
|
||||
;
|
||||
|
||||
COPYFROM:
|
||||
sta ptr4
|
||||
stx ptr4+1 ; Save the passed em_copy pointer
|
||||
|
||||
ldy #EM_COPY::COUNT+1 ; start at the end of the struct
|
||||
lda (ptr4),y ; get high byte of count
|
||||
tax
|
||||
dey
|
||||
lda (ptr4),y ; get low byte of count
|
||||
bne @nodex
|
||||
dex
|
||||
@nodex:
|
||||
.P816
|
||||
dec
|
||||
.P02
|
||||
sta ptr3 ; length low
|
||||
stx ptr3+1 ; length high
|
||||
dey
|
||||
lda (ptr4),y ; get bank
|
||||
.P816
|
||||
inc
|
||||
.P02
|
||||
ldx isnotscpu
|
||||
bne @notscpu64
|
||||
.P816
|
||||
inc
|
||||
.P02
|
||||
@notscpu64:
|
||||
sta tmp2 ; src bank
|
||||
dey
|
||||
lda (ptr4),y ; get page
|
||||
sta ptr2+1 ; src high
|
||||
dey
|
||||
lda (ptr4),y ; get offset in page
|
||||
sta ptr2 ; src low
|
||||
dey
|
||||
lda (ptr4),y ; get memory buffer high
|
||||
sta ptr1+1 ; dst high
|
||||
dey
|
||||
lda (ptr4),y ; get memory buffer low
|
||||
sta ptr1 ; dst low
|
||||
lda #$00
|
||||
sta tmp1 ; dst bank
|
||||
|
||||
jsr transfer
|
||||
|
||||
rts
|
||||
|
||||
; ------------------------------------------------------------------------
|
||||
; COPYTO: Copy from linear into extended memory. A pointer to a structure
|
||||
; describing the request is passed in a/x.
|
||||
; The function must not return anything.
|
||||
;
|
||||
|
||||
COPYTO: sta ptr4
|
||||
stx ptr4+1 ; Save the passed em_copy pointer
|
||||
|
||||
ldy #EM_COPY::COUNT+1 ; start at the end of the struct
|
||||
lda (ptr4),y ; get high byte of count
|
||||
tax
|
||||
dey
|
||||
lda (ptr4),y ; get low byte of count
|
||||
bne @nodex2
|
||||
dex
|
||||
@nodex2:
|
||||
.P816
|
||||
dec
|
||||
.P02
|
||||
sta ptr3 ; length low
|
||||
txa
|
||||
sta ptr3+1 ; length high
|
||||
dey
|
||||
lda (ptr4),y ; get bank
|
||||
.P816
|
||||
inc
|
||||
.P02
|
||||
ldx isnotscpu
|
||||
bne @notascpu64
|
||||
.P816
|
||||
inc
|
||||
.P02
|
||||
@notascpu64:
|
||||
sta tmp1 ; dst bank
|
||||
dey
|
||||
lda (ptr4),y ; get page
|
||||
sta ptr1+1 ; dst high
|
||||
dey
|
||||
lda (ptr4),y ; get page offset
|
||||
sta ptr1 ; dst low
|
||||
dey
|
||||
lda (ptr4),y ; get memory buffer high
|
||||
sta ptr2+1 ; src low
|
||||
dey
|
||||
lda (ptr4),y ; get memory buffer low
|
||||
sta ptr2 ; src high
|
||||
lda #$00
|
||||
sta tmp2 ; src bank
|
||||
|
||||
jsr transfer
|
||||
|
||||
rts
|
||||
|
||||
; ------------------------------------------------------------------------
|
||||
; Helper function for moving a block, the following is used:
|
||||
; ptr1: dst
|
||||
; ptr2: src
|
||||
; ptr3: length
|
||||
; tmp1: dst bank
|
||||
; tmp2: src bank
|
||||
|
||||
transfer:
|
||||
.P816
|
||||
.A8
|
||||
.I8
|
||||
sei
|
||||
pha
|
||||
phx
|
||||
phy
|
||||
ldx tmp1 ; load srcbank
|
||||
stx @move+1 ; store srcbank in move + 1
|
||||
ldy tmp2 ; load dstbank
|
||||
sty @move+2 ; store dstbank in move + 2
|
||||
clc ; switch to native mode
|
||||
xce
|
||||
php ; save status bits
|
||||
rep #%00110000 ; set A and index to 16bit
|
||||
.A16
|
||||
.I16
|
||||
ldy ptr1
|
||||
ldx ptr2
|
||||
lda ptr3
|
||||
@move:
|
||||
mvn 0,0
|
||||
plp ; restore status bits
|
||||
.A8
|
||||
.I8
|
||||
lda #$00
|
||||
pha
|
||||
plb ; restore dbr
|
||||
sec
|
||||
xce ; switch to emul mode
|
||||
ply
|
||||
plx
|
||||
pla
|
||||
cli
|
||||
rts
|
||||
.P02
|
||||
|
||||
@@ -1,50 +1,50 @@
|
||||
;
|
||||
; char cgetc (void);
|
||||
;
|
||||
|
||||
.constructor initcgetc
|
||||
.export _cgetc
|
||||
.import cursor
|
||||
|
||||
.include "osic1p.inc"
|
||||
.include "extzp.inc"
|
||||
.include "zeropage.inc"
|
||||
|
||||
; Initialize one-character buffer that is filled by kbhit()
|
||||
.segment "ONCE"
|
||||
initcgetc:
|
||||
lda #$00
|
||||
sta CHARBUF ; No character in buffer initially
|
||||
rts
|
||||
|
||||
; Input routine from 65V PROM MONITOR, show cursor if enabled
|
||||
.code
|
||||
_cgetc:
|
||||
lda CHARBUF ; character in buffer available?
|
||||
beq nobuffer
|
||||
tax ; save character in X
|
||||
lda #$00
|
||||
sta CHARBUF ; empty buffer
|
||||
beq restorex ; restore X and return
|
||||
nobuffer:
|
||||
lda cursor ; show cursor?
|
||||
beq nocursor
|
||||
ldy CURS_X
|
||||
lda (SCREEN_PTR),y ; fetch current character
|
||||
sta tmp1 ; save it
|
||||
lda #$A1 ; full white square
|
||||
sta (SCREEN_PTR),y ; store at cursor position
|
||||
nocursor:
|
||||
jsr INPUTC ; get input character in A
|
||||
ldx cursor
|
||||
beq done ; was cursor on?
|
||||
tax ; save A in X
|
||||
lda tmp1 ; fetch saved character
|
||||
ldy CURS_X
|
||||
sta (SCREEN_PTR),y ; store at cursor position
|
||||
|
||||
restorex:
|
||||
txa ; restore saved character from X
|
||||
done:
|
||||
ldx #$00 ; high byte of int return value
|
||||
rts
|
||||
;
|
||||
; char cgetc (void);
|
||||
;
|
||||
|
||||
.constructor initcgetc
|
||||
.export _cgetc
|
||||
.import cursor
|
||||
|
||||
.include "osic1p.inc"
|
||||
.include "extzp.inc"
|
||||
.include "zeropage.inc"
|
||||
|
||||
; Initialize one-character buffer that is filled by kbhit()
|
||||
.segment "ONCE"
|
||||
initcgetc:
|
||||
lda #$00
|
||||
sta CHARBUF ; No character in buffer initially
|
||||
rts
|
||||
|
||||
; Input routine from 65V PROM MONITOR, show cursor if enabled
|
||||
.code
|
||||
_cgetc:
|
||||
lda CHARBUF ; character in buffer available?
|
||||
beq nobuffer
|
||||
tax ; save character in X
|
||||
lda #$00
|
||||
sta CHARBUF ; empty buffer
|
||||
beq restorex ; restore X and return
|
||||
nobuffer:
|
||||
lda cursor ; show cursor?
|
||||
beq nocursor
|
||||
ldy CURS_X
|
||||
lda (SCREEN_PTR),y ; fetch current character
|
||||
sta tmp1 ; save it
|
||||
lda #$A1 ; full white square
|
||||
sta (SCREEN_PTR),y ; store at cursor position
|
||||
nocursor:
|
||||
jsr INPUTC ; get input character in A
|
||||
ldx cursor
|
||||
beq done ; was cursor on?
|
||||
tax ; save A in X
|
||||
lda tmp1 ; fetch saved character
|
||||
ldy CURS_X
|
||||
sta (SCREEN_PTR),y ; store at cursor position
|
||||
|
||||
restorex:
|
||||
txa ; restore saved character from X
|
||||
done:
|
||||
ldx #$00 ; high byte of int return value
|
||||
rts
|
||||
|
||||
@@ -1,4 +1,4 @@
|
||||
; Addresses
|
||||
INPUTC := $FD00 ; Input character from keyboard
|
||||
RESET := $FF00 ; Reset address, show boot prompt
|
||||
KBD := $DF00 ; Polled keyboard register
|
||||
; Addresses
|
||||
INPUTC := $FD00 ; Input character from keyboard
|
||||
RESET := $FF00 ; Reset address, show boot prompt
|
||||
KBD := $DF00 ; Polled keyboard register
|
||||
|
||||
@@ -1,183 +1,183 @@
|
||||
;
|
||||
; Macro definitions for screen layout modules
|
||||
;
|
||||
|
||||
.include "extzp.inc"
|
||||
|
||||
.linecont +
|
||||
|
||||
;
|
||||
; Internal function for screensize()
|
||||
;
|
||||
.macro osi_screensize ScrWidth, ScrHeight
|
||||
; Macro implementation of internal screensize
|
||||
; function for given width and height in
|
||||
; characters
|
||||
|
||||
.export screensize
|
||||
|
||||
.proc screensize
|
||||
ldx #ScrWidth
|
||||
ldy #ScrHeight
|
||||
rts
|
||||
.endproc
|
||||
.endmacro
|
||||
|
||||
;
|
||||
; void clrscr (void);
|
||||
;
|
||||
.macro osi_clrscr ScrBase, ScrRamSize
|
||||
|
||||
.export _clrscr
|
||||
|
||||
.proc _clrscr
|
||||
lda #<ScrBase ; Fill whole video RAM with blanks by calling
|
||||
ldx #>ScrBase ; memset appropriately
|
||||
jsr pushax
|
||||
|
||||
lda #' '
|
||||
ldx #$00
|
||||
jsr pushax
|
||||
|
||||
lda #<ScrRamSize
|
||||
ldx #>ScrRamSize
|
||||
jsr _memset
|
||||
|
||||
lda #$00 ; Cursor in upper left corner
|
||||
sta CURS_X
|
||||
sta CURS_Y
|
||||
|
||||
jmp plot ; Set the cursor position
|
||||
.endproc
|
||||
|
||||
.endmacro
|
||||
|
||||
;
|
||||
; cputc/cputcxy for Challenger 1P
|
||||
; Based on PET/CBM implementation
|
||||
;
|
||||
|
||||
.macro osi_cputfuncs ScrBase, ScrFirstChar, ScrWidth, ScrHeight, \
|
||||
ScrollDist, ScrLo, ScrHi
|
||||
|
||||
; Number of characters to move for scrolling
|
||||
; by one line
|
||||
ScrollLength = (ScrHeight - 1) * ScrollDist
|
||||
|
||||
;
|
||||
; void cputcxy (unsigned char x, unsigned char y, char c);
|
||||
; void cputc (char c);
|
||||
;
|
||||
.export _cputcxy, _cputc, cputdirect, putchar
|
||||
.export newline, plot
|
||||
|
||||
_cputcxy:
|
||||
pha ; Save C
|
||||
jsr gotoxy ; Set cursor, drop x and y
|
||||
pla ; Restore C
|
||||
|
||||
; Plot a character - also used as internal function
|
||||
|
||||
_cputc: cmp #$0A ; CR?
|
||||
bne L1
|
||||
lda #0
|
||||
sta CURS_X
|
||||
beq plot ; Recalculate pointers
|
||||
|
||||
L1: cmp #$0D ; LF?
|
||||
beq newline ; Recalculate pointers
|
||||
|
||||
cputdirect:
|
||||
jsr putchar ; Write the character to the screen
|
||||
|
||||
; Advance cursor position, register Y contains horizontal position after
|
||||
; putchar
|
||||
|
||||
cpy #(ScrWidth - 1) ; Check whether line is full
|
||||
bne L3
|
||||
jsr newline ; New line
|
||||
ldy #$FF ; + cr
|
||||
L3: iny
|
||||
sty CURS_X
|
||||
rts
|
||||
|
||||
newline:
|
||||
inc CURS_Y
|
||||
lda CURS_Y
|
||||
cmp #ScrHeight ; Screen height
|
||||
bne plot
|
||||
dec CURS_Y ; Bottom of screen reached, scroll
|
||||
|
||||
; Scroll destination address
|
||||
lda #<(ScrBase + ScrFirstChar)
|
||||
ldx #>(ScrBase + ScrFirstChar)
|
||||
jsr pushax
|
||||
|
||||
; Scroll source address
|
||||
lda #<(ScrBase + ScrFirstChar + ScrollDist)
|
||||
ldx #>(ScrBase + ScrFirstChar + ScrollDist)
|
||||
jsr pushax
|
||||
|
||||
; Number of characters to move
|
||||
lda #<ScrollLength
|
||||
ldx #>ScrollLength
|
||||
jsr _memmove
|
||||
|
||||
; Address of first character in last line
|
||||
; of screen
|
||||
lda #<(ScrBase + ScrFirstChar + ScrollLength)
|
||||
sta ptr1
|
||||
lda #>(ScrBase + ScrFirstChar + ScrollLength)
|
||||
sta ptr1+1
|
||||
|
||||
ldy #ScrWidth ; Fill last line with blanks
|
||||
lda #' '
|
||||
clrln: sta (ptr1),y
|
||||
dey
|
||||
bpl clrln
|
||||
|
||||
plot: ldy CURS_Y
|
||||
lda ScrLo,y
|
||||
sta SCREEN_PTR
|
||||
lda ScrHi,y
|
||||
sta SCREEN_PTR+1
|
||||
rts
|
||||
|
||||
; Write one character to the screen without doing anything else, return X
|
||||
; position in register Y
|
||||
|
||||
putchar:
|
||||
ldy CURS_X
|
||||
sta (SCREEN_PTR),y ; Set char
|
||||
rts
|
||||
|
||||
.endmacro
|
||||
|
||||
.macro osi_screen_funcs ScrBase, ScrRamSize, ScrFirstChar, \
|
||||
ScrWidth, ScrHeight, ScrollDist
|
||||
|
||||
.import gotoxy
|
||||
.import _memmove, _memset, pushax
|
||||
.importzp ptr1
|
||||
|
||||
.rodata
|
||||
|
||||
; Screen address tables - offset to real screen
|
||||
ScrTabLo:
|
||||
.repeat ScrHeight, I
|
||||
.byte <(ScrBase + ScrFirstChar + I * ScrollDist)
|
||||
.endrep
|
||||
|
||||
ScrTabHi:
|
||||
.repeat ScrHeight, I
|
||||
.byte >(ScrBase + ScrFirstChar + I * ScrollDist)
|
||||
.endrep
|
||||
|
||||
.code
|
||||
|
||||
osi_cputfuncs ScrBase, ScrFirstChar, ScrWidth, ScrHeight, \
|
||||
ScrollDist, ScrTabLo, ScrTabHi
|
||||
osi_screensize ScrWidth, ScrHeight
|
||||
osi_clrscr ScrBase, ScrRamSize
|
||||
|
||||
;
|
||||
; Macro definitions for screen layout modules
|
||||
;
|
||||
|
||||
.include "extzp.inc"
|
||||
|
||||
.linecont +
|
||||
|
||||
;
|
||||
; Internal function for screensize()
|
||||
;
|
||||
.macro osi_screensize ScrWidth, ScrHeight
|
||||
; Macro implementation of internal screensize
|
||||
; function for given width and height in
|
||||
; characters
|
||||
|
||||
.export screensize
|
||||
|
||||
.proc screensize
|
||||
ldx #ScrWidth
|
||||
ldy #ScrHeight
|
||||
rts
|
||||
.endproc
|
||||
.endmacro
|
||||
|
||||
;
|
||||
; void clrscr (void);
|
||||
;
|
||||
.macro osi_clrscr ScrBase, ScrRamSize
|
||||
|
||||
.export _clrscr
|
||||
|
||||
.proc _clrscr
|
||||
lda #<ScrBase ; Fill whole video RAM with blanks by calling
|
||||
ldx #>ScrBase ; memset appropriately
|
||||
jsr pushax
|
||||
|
||||
lda #' '
|
||||
ldx #$00
|
||||
jsr pushax
|
||||
|
||||
lda #<ScrRamSize
|
||||
ldx #>ScrRamSize
|
||||
jsr _memset
|
||||
|
||||
lda #$00 ; Cursor in upper left corner
|
||||
sta CURS_X
|
||||
sta CURS_Y
|
||||
|
||||
jmp plot ; Set the cursor position
|
||||
.endproc
|
||||
|
||||
.endmacro
|
||||
|
||||
;
|
||||
; cputc/cputcxy for Challenger 1P
|
||||
; Based on PET/CBM implementation
|
||||
;
|
||||
|
||||
.macro osi_cputfuncs ScrBase, ScrFirstChar, ScrWidth, ScrHeight, \
|
||||
ScrollDist, ScrLo, ScrHi
|
||||
|
||||
; Number of characters to move for scrolling
|
||||
; by one line
|
||||
ScrollLength = (ScrHeight - 1) * ScrollDist
|
||||
|
||||
;
|
||||
; void cputcxy (unsigned char x, unsigned char y, char c);
|
||||
; void cputc (char c);
|
||||
;
|
||||
.export _cputcxy, _cputc, cputdirect, putchar
|
||||
.export newline, plot
|
||||
|
||||
_cputcxy:
|
||||
pha ; Save C
|
||||
jsr gotoxy ; Set cursor, drop x and y
|
||||
pla ; Restore C
|
||||
|
||||
; Plot a character - also used as internal function
|
||||
|
||||
_cputc: cmp #$0A ; CR?
|
||||
bne L1
|
||||
lda #0
|
||||
sta CURS_X
|
||||
beq plot ; Recalculate pointers
|
||||
|
||||
L1: cmp #$0D ; LF?
|
||||
beq newline ; Recalculate pointers
|
||||
|
||||
cputdirect:
|
||||
jsr putchar ; Write the character to the screen
|
||||
|
||||
; Advance cursor position, register Y contains horizontal position after
|
||||
; putchar
|
||||
|
||||
cpy #(ScrWidth - 1) ; Check whether line is full
|
||||
bne L3
|
||||
jsr newline ; New line
|
||||
ldy #$FF ; + cr
|
||||
L3: iny
|
||||
sty CURS_X
|
||||
rts
|
||||
|
||||
newline:
|
||||
inc CURS_Y
|
||||
lda CURS_Y
|
||||
cmp #ScrHeight ; Screen height
|
||||
bne plot
|
||||
dec CURS_Y ; Bottom of screen reached, scroll
|
||||
|
||||
; Scroll destination address
|
||||
lda #<(ScrBase + ScrFirstChar)
|
||||
ldx #>(ScrBase + ScrFirstChar)
|
||||
jsr pushax
|
||||
|
||||
; Scroll source address
|
||||
lda #<(ScrBase + ScrFirstChar + ScrollDist)
|
||||
ldx #>(ScrBase + ScrFirstChar + ScrollDist)
|
||||
jsr pushax
|
||||
|
||||
; Number of characters to move
|
||||
lda #<ScrollLength
|
||||
ldx #>ScrollLength
|
||||
jsr _memmove
|
||||
|
||||
; Address of first character in last line
|
||||
; of screen
|
||||
lda #<(ScrBase + ScrFirstChar + ScrollLength)
|
||||
sta ptr1
|
||||
lda #>(ScrBase + ScrFirstChar + ScrollLength)
|
||||
sta ptr1+1
|
||||
|
||||
ldy #ScrWidth ; Fill last line with blanks
|
||||
lda #' '
|
||||
clrln: sta (ptr1),y
|
||||
dey
|
||||
bpl clrln
|
||||
|
||||
plot: ldy CURS_Y
|
||||
lda ScrLo,y
|
||||
sta SCREEN_PTR
|
||||
lda ScrHi,y
|
||||
sta SCREEN_PTR+1
|
||||
rts
|
||||
|
||||
; Write one character to the screen without doing anything else, return X
|
||||
; position in register Y
|
||||
|
||||
putchar:
|
||||
ldy CURS_X
|
||||
sta (SCREEN_PTR),y ; Set char
|
||||
rts
|
||||
|
||||
.endmacro
|
||||
|
||||
.macro osi_screen_funcs ScrBase, ScrRamSize, ScrFirstChar, \
|
||||
ScrWidth, ScrHeight, ScrollDist
|
||||
|
||||
.import gotoxy
|
||||
.import _memmove, _memset, pushax
|
||||
.importzp ptr1
|
||||
|
||||
.rodata
|
||||
|
||||
; Screen address tables - offset to real screen
|
||||
ScrTabLo:
|
||||
.repeat ScrHeight, I
|
||||
.byte <(ScrBase + ScrFirstChar + I * ScrollDist)
|
||||
.endrep
|
||||
|
||||
ScrTabHi:
|
||||
.repeat ScrHeight, I
|
||||
.byte >(ScrBase + ScrFirstChar + I * ScrollDist)
|
||||
.endrep
|
||||
|
||||
.code
|
||||
|
||||
osi_cputfuncs ScrBase, ScrFirstChar, ScrWidth, ScrHeight, \
|
||||
ScrollDist, ScrTabLo, ScrTabHi
|
||||
osi_screensize ScrWidth, ScrHeight
|
||||
osi_clrscr ScrBase, ScrRamSize
|
||||
|
||||
.endmacro
|
||||
Reference in New Issue
Block a user