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Changes to I/O access

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This commit is contained in:
Wayne Parham
2021-06-09 10:23:42 -05:00
parent 2a25921515
commit 7d6541274d
8 changed files with 219 additions and 583 deletions
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220
libsrc/sym1/bitio.s
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@@ -1,220 +0,0 @@
;
; Wayne Parham (wayne@parhamdata.com)
;
; void set_DDR1A (int value);
; int get_DDR1A (void);
; void set_IOR1A (int value);
; int get_IOR1A (void);
; void set_DDR1B (int value);
; int get_DDR1B (void);
; void set_IOR1B (int value);
; int get_IOR1B (void);
; void set_DDR2A (int value);
; int get_DDR2A (void);
; void set_IOR2A (int value);
; int get_IOR2A (void);
; void set_DDR2B (int value);
; int get_DDR2B (void);
; void set_IOR2B (int value);
; int get_IOR2B (void);
; void set_DDR3A (int value);
; int get_DDR3A (void);
; void set_IOR3A (int value);
; int get_IOR3A (void);
; void set_DDR3B (int value);
; int get_DDR3B (void);
; void set_IOR3B (int value);
; int get_IOR3B (void);
;
.include "sym1.inc"
.export _set_DDR1A, _get_DDR1A, _set_IOR1A, _get_IOR1A
.export _set_DDR1B, _get_DDR1B, _set_IOR1B, _get_IOR1B
.export _set_DDR2A, _get_DDR2A, _set_IOR2A, _get_IOR2A
.export _set_DDR2B, _get_DDR2B, _set_IOR2B, _get_IOR2B
.export _set_DDR3A, _get_DDR3A, _set_IOR3A, _get_IOR3A
.export _set_DDR3B, _get_DDR3B, _set_IOR3B, _get_IOR3B
.segment "CODE"
.proc _set_DDR1A: near
sta DDR1A ; Write data direction register for port 1A
rts
.endproc
.proc _get_DDR1A: near
lda DDR1A ; Read data direction register for port 1A
ldx #>$0000 ;
rts ; Return DDR1A
.endproc
.proc _set_IOR1A: near
sta OR1A ; Write I/O register for port 1A
rts
.endproc
.proc _get_IOR1A: near
lda OR1A ; Read I/O register for port 1A
ldx #>$0000 ;
rts ; Return OR1A
.endproc
.proc _set_DDR1B: near
sta DDR1B ; Write data direction register for port 1B
rts
.endproc
.proc _get_DDR1B: near
lda DDR1B ; Read data direction register for port 1B
ldx #>$0000 ;
rts ; Return DDR1B
.endproc
.proc _set_IOR1B: near
sta OR1B ; Write I/O register for port 1B
rts
.endproc
.proc _get_IOR1B: near
lda OR1B ; Read I/O register for port 1B
ldx #>$0000 ;
rts ; Return OR1B
.endproc
.proc _set_DDR2A: near
sta DDR2A ; Write data direction register for port 2A
rts
.endproc
.proc _get_DDR2A: near
lda DDR2A ; Read data direction register for port 2A
ldx #>$0000 ;
rts ; Return DDR2A
.endproc
.proc _set_IOR2A: near
sta OR2A ; Write I/O register for port 2A
rts
.endproc
.proc _get_IOR2A: near
lda OR2A ; Read I/O register for port 2A
ldx #>$0000 ;
rts ; Return OR2A
.endproc
.proc _set_DDR2B: near
sta DDR2B ; Write data direction register for port 2B
rts
.endproc
.proc _get_DDR2B: near
lda DDR2B ; Read data direction register for port 2B
ldx #>$0000 ;
rts ; Return DDR2B
.endproc
.proc _set_IOR2B: near
sta OR2B ; Write I/O register for port 2B
rts
.endproc
.proc _get_IOR2B: near
lda OR2B ; Read I/O register for port 2B
ldx #>$0000 ;
rts ; Return OR2B
.endproc
.proc _set_DDR3A: near
sta DDR3A ; Write data direction register for port 3A
rts
.endproc
.proc _get_DDR3A: near
lda DDR3A ; Read data direction register for port 3A
ldx #>$0000 ;
rts ; Return DDR3A
.endproc
.proc _set_IOR3A: near
sta OR3A ; Write I/O register for port 3A
rts ; Return 0000
.endproc
.proc _get_IOR3A: near
lda OR3A ; Read I/O register for port 3A
ldx #>$0000 ;
rts ; Return OR3A
.endproc
.proc _set_DDR3B: near
sta DDR3B ; Write data direction register for port 3B
rts
.endproc
.proc _get_DDR3B: near
lda DDR3B ; Read data direction register for port 3B
ldx #>$0000 ;
rts ; Return DDR3B
.endproc
.proc _set_IOR3B: near
sta OR3B ; Write I/O register for port 3B
rts
.endproc
.proc _get_IOR3B: near
lda OR3B ; Read I/O register for port 3B
ldx #>$0000 ;
rts ; Return OR3B
.endproc

126
libsrc/sym1/display.s
View File

@@ -1,29 +1,12 @@
;
; Wayne Parham (wayne@parhamdata.com)
;
; int fdisp (void);
; void set_D0 (char segments);
; int get_D0 (void);
; void set_D1 (char segments);
; int get_D1 (void);
; void set_D2 (char segments);
; int get_D2 (void);
; void set_D3 (char segments);
; int get_D3 (void);
; void set_D4 (char segments);
; int get_D4 (void);
; void set_D5 (char segments);
; int get_D5 (void);
; void set_D6 (char segments);
; int get_D6 (void);
; void fdisp (void);
;
.include "sym1.inc"
.export _fdisp, _set_D0, _get_D0
.export _set_D1, _get_D1, _set_D2, _get_D2
.export _set_D3, _get_D3, _set_D4, _get_D4
.export _set_D5, _get_D5, _set_D6, _get_D6
.export _fdisp
.segment "CODE"
@@ -34,108 +17,3 @@
.endproc
.proc _set_D0: near
sta DISBUF0 ; Write Digit 0
rts
.endproc
.proc _get_D0: near
lda DISBUF0 ; Read Digit 0
ldx #>$0000 ;
rts ; Return DISBUF0
.endproc
.proc _set_D1: near
sta DISBUF1 ; Write Digit 1
rts
.endproc
.proc _get_D1: near
lda DISBUF1 ; Read Digit 1
ldx #>$0000 ;
rts
.endproc
.proc _set_D2: near
sta DISBUF2 ; Write Digit 2
rts
.endproc
.proc _get_D2: near
lda DISBUF2 ; Read Digit 2
ldx #>$0000 ;
rts ; Return DISBUF2
.endproc
.proc _set_D3: near
sta DISBUF3 ; Write Digit 3
rts
.endproc
.proc _get_D3: near
lda DISBUF3 ; Read Digit 3
ldx #>$0000 ;
rts ; Return DISBUF3
.endproc
.proc _set_D4: near
sta DISBUF4 ; Write Digit 4
rts
.endproc
.proc _get_D4: near
lda DISBUF4 ; Read Digit 4
ldx #>$0000 ;
rts ; Return DISBUF4
.endproc
.proc _set_D5: near
sta DISBUF5 ; Write Digit 5
rts
.endproc
.proc _get_D5: near
lda DISBUF5 ; Read Digit 5
ldx #>$0000 ;
rts ; Return DISBUF5
.endproc
.proc _set_D6: near
sta DISBUF6 ; Write byte to the right of display
rts
.endproc
.proc _get_D6: near
lda DISBUF6 ; Read byte to the right of display
ldx #>$0000 ;
rts ; Return DISBUF6
.endproc

6
libsrc/sym1/read.s
View File

@@ -29,7 +29,11 @@ begin: dec ptr2
beq done ; If buffer full, return
getch: jsr INTCHR ; Get character using Monitor ROM call
and #$7F ; Clear hi bit
jsr OUTCHR ; Echo it
and #$7F ; Clear hi bit and check for '\r'
cmp #$0D
bne putch
lda #$0A ; Replace with '\n' and set count to zero
putch: ldy #$00 ; Put char into return buffer
sta (ptr1),y