6502/cc65
1
0
Fork 0
mirror of https://github.com/cc65/cc65.git synced 2024-06-18 07:29:36 +00:00
Code Issues Projects Releases Wiki Activity

Comment the ATASCII to screen code conversion.

Browse Source
This commit is contained in:
Piotr Fusik 2019-01-23 19:02:26 +01:00
parent 1781a5cfe7
commit 7a034f505b
1 changed files with 6 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
libsrc/atari/cputc.s
View File

@ -30,13 +30,13 @@ L4: cmp #$0A ; LF
cmp #ATEOL ; Atari-EOL?
beq newline
asl a
adc #$c0
bpl intok
eor #$40
intok: lsr
asl a ; shift out the inverse bit
adc #$c0 ; grab the inverse bit; convert ATASCII to screen code
bpl codeok ; screen code ok?
eor #$40 ; needs correction
codeok: lsr a ; undo the shift
bcc cputdirect
eor #$80
eor #$80 ; restore the inverse bit
cputdirect: ; accepts screen code
jsr putchar