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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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8
libsrc/cbm/cvline.s
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@@ -6,13 +6,12 @@
;
.export _cvlinexy, _cvline
.import popa, _gotoxy, putchar, newline
.import gotoxy, putchar, newline
.importzp tmp1, cvlinechar
_cvlinexy:
pha ; Save the length
jsr popa ; Get y
jsr _gotoxy ; Call this one, will pop params
jsr gotoxy ; Call this one, will pop params
pla ; Restore the length and run into _cvline
_cvline:
@@ -25,6 +24,3 @@ L1: lda #cvlinechar ; Vertical bar
dec tmp1
bne L1
L9: rts