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Added LC2UC conversion for the Apple ][ and replaced column-setting-hack with printing a carriage return.

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This commit is contained in:
Oliver Schmidt 2015-02-16 17:50:26 +01:00
parent bc17aefbfe
commit 7c3235b5bb
1 changed files with 9 additions and 6 deletions
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15
drivers/a2print.s
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@ -17,13 +17,16 @@ screen_current_row = $25 ; CV - Vertical cursor-position (0-23)
; outputs: none
print_a:
ora #$80 ; turn ASCII into Apple 2 screen codes
cmp #$8A ; is it a line feed?
cmp #$e0 ; is it lower case?
bcc @check_line_feed
ldx $fbb3 ; check machine version
cpx #$06 ; is it at least an //e?
beq @check_line_feed
and #$df ; convert to upper case
@check_line_feed:
cmp #$8a ; is it a line feed?
bne @not_line_feed
; jmp print_cr
pha
lda #$0
sta screen_current_col
pla
lda #$8d ; replace with a carriage return
@not_line_feed:
jmp $fded