I have a 65C02 in my VIC-20 since 1983 and have never discovered any anomalies. On the contrary, I have made good use of the extra opcodes in several of my projects.
Dependance on unsupported or undocumented features is always a bad idea.
Search found 349 matches
- Thu Jun 18, 2009 4:51 am
- Forum: Hardware and Tech
- Topic: How small could a fully functional Vic 20 be?
- Replies: 15
- Views: 4245
- Mon May 25, 2009 5:09 am
- Forum: Programming
- Topic: Saving Memory for ML?
- Replies: 7
- Views: 2308
And thus you can make it position independ: 5000 lda #5 5002 ldx #2 5004 ldy #0 5006 jsr $ffba 5009 lda #0 500b pha 500c tsx 500d lda #8 500f pha 5010 lda #2 5012 ldy #1 5014 jsr $ffbd 5017 pla 5018 pla 5019 jsr $ffc0 501c jmp $ff37 501f With it being position independ you can safely add the ML code...
- Tue May 19, 2009 6:53 am
- Forum: Games
- Topic: In search of...
- Replies: 38
- Views: 15183
In search of...
for the real VIC-20 with 64HDD but no joystick:
- Sokoban
and
- Lemmings
(or is this too much too ask for a VIC)
and also a good arcade look-and-feel of
- Pacman
Regards
- Sokoban
and
- Lemmings
(or is this too much too ask for a VIC)
and also a good arcade look-and-feel of
- Pacman
Regards
- Tue Apr 14, 2009 1:04 pm
- Forum: Buy, Sell, and Trade
- Topic: WTB: VIC 1010 Expansion Module
- Replies: 16
- Views: 6832
Re: WTB: VIC 1010 Expansion Module
The arrangement is that the 22 x 11 (playfield) is bitmapped with screen ram at $400-$4f1 ... As Mike said, this works in VICE but certainly not on a real VIC with any expansion. It is possible to get that to work on a real VIC if you add your 3K expansion internally to the VIC on the other side of...