65 lines
1.6 KiB
NASM
65 lines
1.6 KiB
NASM
; Copyright (C) 2020 Christophe Meneboeuf <christophe@xtof.info>
|
|
;
|
|
; This program is free software: you can redistribute it and/or modify
|
|
; it under the terms of the GNU General Public License as published by
|
|
; the Free Software Foundation, either version 3 of the License, or
|
|
; (at your option) any later version.
|
|
;
|
|
; This program is distributed in the hope that it will be useful,
|
|
; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
; GNU General Public License for more details.
|
|
;
|
|
; You should have received a copy of the GNU General Public License
|
|
; along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
|
|
|
|
.include "memory.inc"
|
|
|
|
; nb of bytes to be displayed in DBG_TRACES[0]
|
|
.export DBG_TRACE
|
|
; bytes to be displayed
|
|
.export DBG_TRACES
|
|
|
|
|
|
.CODE
|
|
.define STROUT $DB3A ; Applesoft: OUTPUTS AY-POINTED NULL TERMINATED STRING
|
|
.define LINPTR $ED24 ; Applesoft: Displays the number A(high)X(low) in decimal
|
|
|
|
; Traces the number of TRACES requested
|
|
DBG_TRACE:
|
|
ldy #>str_trace
|
|
lda #<str_trace
|
|
jsr STROUT
|
|
|
|
lda #0
|
|
loop:
|
|
tax
|
|
inx
|
|
txa
|
|
pha
|
|
lda DBG_TRACES, X
|
|
tax
|
|
lda #0
|
|
jsr LINPTR
|
|
|
|
ldy #>str_space
|
|
lda #<str_space
|
|
jsr STROUT
|
|
|
|
pla
|
|
cmp DBG_TRACES
|
|
bne loop
|
|
rts
|
|
|
|
.DATA
|
|
str_trace: .byte 13, "TRACE: ", 0
|
|
str_space: .byte " ", 0
|
|
|
|
.BSS
|
|
DBG_TRACES: .res 7 ; bytes to be displayed by TRACE
|
|
|
|
|
|
|