the10thwiz/cc65
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

simple conio test works again

Browse Source
This commit is contained in:
mrdudz
2015-07-12 10:32:55 +02:00
parent 877fd532c2
commit 21999b081f
6 changed files with 96 additions and 94 deletions
Download Patch File Download Diff File Expand all files Collapse all files

128
libsrc/pce/crt0.s
View File

@@ -43,56 +43,60 @@ start:
; setup the CPU and System-IRQ
; Initialize CPU
; Initialize CPU
sei
nop
csh
nop
cld
nop
sei
nop
csh ; set high speed CPU mode
nop
cld
nop
; Setup stack and memory mapping
ldx #$FF ; Stack top ($21FF)
txs
txa
tam #0 ; 0000-1FFF = Hardware page
; Setup stack and memory mapping
ldx #$FF ; Stack top ($21FF)
txs
lda #$F8
tam #1 ; 2000-3FFF = Work RAM
; at startup all MPRs are set to 0, so init them
lda #$ff
tam #1 ; 0000-1FFF = Hardware page
lda #$F8
tam #2 ; 2000-3FFF = Work RAM
;lda #$F7
;tam #2 ; 4000-5FFF = Save RAM
;lda #1
;tam #3 ; 6000-7FFF Page 2
;lda #2
;tam #4 ; 8000-9FFF Page 3
;lda #3
;tam #5 ; A000-BFFF Page 4
;lda #4
;tam #6 ; C000-DFFF Page 5
;lda #0
;tam #7 ; e000-fFFF hucard/syscard bank 0
lda #$F7
tam #2 ; 4000-5FFF = Save RAM
; Clear work RAM (2000-3FFF)
stz <$00
tii $2000, $2001, $1FFF
lda #1
tam #3 ; 6000-7FFF Page 2
lda #2
tam #4 ; 8000-9FFF Page 3
lda #3
tam #5 ; A000-BFFF Page 4
lda #4
tam #6 ; C000-DFFF Page 5
; Initialize hardware
stz TIMER_COUNT ; Timer off
lda #$07
sta IRQ_MASK ; Interrupts off
stz IRQ_STATUS ; Acknowledge timer
; Initialize hardware
stz TIMER_COUNT ; Timer off
lda #$07
sta IRQ_MASK ; Interrupts off
stz IRQ_STATUS ; Acknowledge timer
;; i dont know why the heck this one doesnt
;; work when called from a constructor :/
.import vdc_init
jsr vdc_init
; Clear work RAM
stz <$00
tii $2000, $2001, $1FFF
;; i dont know why the heck this one doesnt
;; work when called from a constructor :/
.import vdc_init
jsr vdc_init
;; jsr joy_init
; Turn on background and VD interrupt/IRQ1
lda #$05
sta IRQ_MASK ; IRQ1=on
cli
; Turn on background and VD interrupt/IRQ1
lda #$05
sta IRQ_MASK ; IRQ1=on
cli
; Clear the BSS data
@@ -162,8 +166,10 @@ start:
; Call module constructors
jsr initlib
; .import initconio
; jsr initconio
.import initconio
jsr initconio
; Pass an empty command line
@@ -189,34 +195,34 @@ _exit:
; ------------------------------------------------------------------------
_irq1:
pha
phx
phy
pha
phx
phy
inc _tickcount
bne @s
inc _tickcount+1
inc _tickcount
bne @s
inc _tickcount+1
@s:
; Acknowlege interrupt
ldaio VDC_CTRL
; Acknowlege interrupt
ldaio VDC_CTRL
ply
plx
pla
rti
ply
plx
pla
rti
_irq2:
rti
rti
_nmi:
rti
rti
_timer:
stz IRQ_STATUS
rti
stz IRQ_STATUS
rti
.export initmainargs
.export initmainargs
initmainargs:
rts
rts
; ------------------------------------------------------------------------
; hardware vectors