the10thwiz/cc65
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fixes and improvements to KIM-1 i/o routines.

Browse Source 
Tested on real KIM-1 hardware.

read.s:
- Remove commented out line.
- Remove unused check for bell character.
- Remove echo of newline (hardware always echoes entered characters).
- This fixes gets() and fgets() so they return when CR is entered.

write.s:
- Fix check for adding return after linefeed (failed to work because OUTCHR changes A)
- Remove unused check for bell character.

kim1.inc:
- Add symbol for monitor entry

crt0.s:
- Jump to KIM-1 monitor by address rather than using BRK (which relies on vector being set in RAM)
This commit is contained in:
Jeff Tranter
2023-03-27 17:56:25 -04:00
parent fcbcbea4ad
commit 806ffe5675
4 changed files with 7 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
asminc/kim1.inc
View File

@@ -15,7 +15,7 @@ OUTCHR := $1EA0 ; Output character
INTCHR := $1E5A ; Input character without case conversion
DUMPT := $1800 ; Dump memory to tape
LOADT := $1873 ; Load memory from tape
START := $1C4F ; Enter KIM-1 monitor
; ---------------------------------------------------------------------------
; System Memory