Apple-2-SW/basic-system-cmd
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Setting high bit from name, fixed D1/D2, corrected fake move code to move before storing vector.

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This commit is contained in:
Rob Greene 2015-09-19 17:26:44 -05:00
parent 47b373cb0b
commit 6bc64408d9
1 changed files with 26 additions and 16 deletions
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42
main.asm
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@ -49,10 +49,21 @@ crout = $fd8e
prbyte = $fdda prbyte = $fdda
cout = $fded cout = $fded
; Application stuff:
buffer = $6800
.org $2000 .org $2000
install: install:
ldy #0
: lda _CodeStartAddress,y
sta _CodeBeginAddress,y
iny
cpy #(_CodeEndAddress-_CodeBeginAddress)
bne :-
lda extrncmd+1 lda extrncmd+1
sta nextcmd+1 sta nextcmd+1
lda extrncmd lda extrncmd
@ -62,10 +73,13 @@ install:
sta extrncmd sta extrncmd
lda #<entry lda #<entry
sta extrncmd sta extrncmd
rts rts
_CodeStartAddress:
.org $6000 .org $6000
_CodeBeginAddress:
entry: entry:
ldx #0 ldx #0
@again: @again:
@ -138,7 +152,7 @@ cd:
online: online:
stz sunitnum stz sunitnum
stz sbufadr stz sbufadr
lda #>inbuf lda #>buffer
sta sbufadr+1 sta sbufadr+1
lda #$C5 ; ONLINE system command lda #$C5 ; ONLINE system command
jsr gosystem jsr gosystem
@ -150,40 +164,37 @@ online:
@continue: @continue:
ldx #0 ldx #0
@loop: @loop:
lda inbuf,x ldy buffer,x
beq @exit beq @exit
jsr printsd ; Side-effect is to move Acc. to Y-Reg. jsr printsd
tya tya
and #$0f and #$0f
beq @deverr beq @deverr
; pha
tay tay
: inx : inx
lda inbuf,x lda buffer,x
ora #$80
jsr cout jsr cout
dey dey
bne :- bne :-
; pla
; cmp #$0f ; If string length was 15, already at next entry
; beq @loop
@adjust: @adjust:
jsr crout jsr crout
txa txa
clc clc
adc #$10 adc #$0f
and #$f0 and #$f0
bra @loop bra @loop
; A device error message ; A device error message
@deverr: @deverr:
lda #'E'|$80 lda #'E'|$80
jsr cout jsr cout
lda #'r'|$80 lda #'R'|$80
jsr cout jsr cout
jsr cout jsr cout
lda #'='|$80 lda #'='|$80
jsr cout jsr cout
inx inx
lda inbuf,x lda buffer,x
tay ; short-term save tay ; short-term save
jsr prbyte jsr prbyte
tya tya
@ -194,14 +205,13 @@ online:
lda #'('|$80 lda #'('|$80
jsr cout jsr cout
inx inx
lda inbuf,x ldy buffer,x
jsr printsd jsr printsd
lda #')'|$80 lda #')'|$80
jsr cout jsr cout
bra @adjust bra @adjust
printsd: printsd:
tay
lda #'S'|$80 lda #'S'|$80
jsr cout jsr cout
tya tya
@ -218,9 +228,9 @@ printsd:
jsr cout jsr cout
tya tya
and #$80 and #$80
asl asl ; Drive 2 will set carry...
rol adc #'1'|$80 ; ... making the '1' a '2'
ora #'0'|$80
jmp cout jmp cout
_CodeEndAddress: