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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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7
libsrc/apple2/cputc.s
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@@ -10,7 +10,7 @@
.endif
.export _cputcxy, _cputc
.export cputdirect, newline, putchar
.import popa, _gotoxy, VTABZ
.import gotoxy, VTABZ
.include "apple2.inc"
@@ -29,9 +29,8 @@ initconio:
_cputcxy:
pha ; Save C
jsr popa ; Get Y
jsr _gotoxy
pla ; Restore C
jsr gotoxy ; Call this one, will pop params
pla ; Restore C and run into _cputc
_cputc:
cmp #$0D ; Test for \r = carrage return