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Introduced internal gotoxy that pops both parameters.

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About all CONIO functions offering a <...>xy variant call
  popa
  _gotoxy

By providing an internal gotoxy variant that starts with a popa all those CONIO function can be shortened by 3 bytes. As soon as program calls more than one CONIO function this means an overall code size reduction.
This commit is contained in:
Oliver Schmidt
2016-06-05 14:58:38 +02:00
parent d670998814
commit 13482984ca
50 changed files with 120 additions and 152 deletions
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5
libsrc/atari5200/cputc.s
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@@ -10,7 +10,7 @@
.export _cputcxy, _cputc
.export plot, cputdirect, putchar
.import popa, _gotoxy, mul20
.import gotoxy, mul20
.importzp ptr4
.import setcursor
@@ -21,8 +21,7 @@ screen_setup = screen_setup_20x24
_cputcxy:
pha ; Save C
jsr popa ; Get Y
jsr _gotoxy ; Set cursor, drop x
jsr gotoxy ; Set cursor, drop x and y
pla ; Restore C
_cputc:

5
libsrc/atari5200/gotoxy.s
View File

@@ -6,10 +6,13 @@
.include "atari5200.inc"
.export _gotoxy
.export gotoxy, _gotoxy
.import popa
.import setcursor
gotoxy:
jsr popa ; Get Y
_gotoxy: ; Set the cursor position
sta ROWCRS_5200 ; Set Y
jsr popa ; Get X