Search found 4648 matches
- Mon Apr 01, 2013 3:23 am
- Forum: Programming
- Topic: Display Mirror
- Replies: 6
- Views: 1547
Display Mirror
Please forgive me the lack of modesty, but I believe this is one of the most important findings on the VIC-20 over the last years!! After checking some books about photon waveform reconstruction I found out, that using both CPUs of the VIC-20 and the 1541 disk drive it must be possible to detect wha...
- Wed Mar 27, 2013 2:44 pm
- Forum: Programming
- Topic: Looking for a nice font for the VICMIDI software
- Replies: 4
- Views: 905
Here we go: 'font.bin'. I didn't include the reverse characters, as those could simply be constructed on-the-fly with EOR #$FF while writing them to RAM. Saves you another 1K of precious ROM space.
- Wed Mar 27, 2013 2:14 pm
- Forum: Programming
- Topic: [Q] running a prg from C (or asm)
- Replies: 15
- Views: 2800
Maybe ... [...] Pretty much the same code I use in my boot loaders, just I don't bother catching I/O errors: LDA #1 LDX $BA ; last device used LDY #0 ; secondary address = 0, force load to address given in X/Y on KERNAL load JSR $FFBA ; SETLFS LDA #NameEnd-Name LDX #Name MOD 256 LDY #Name DIV 256 J...
- Tue Mar 26, 2013 2:06 pm
- Forum: Programming
- Topic: 32 Column Screen query
- Replies: 8
- Views: 2244
Re: 32 Column Screen query
I have written my own 40 column routine but it's certainly not the best especially from a performance point of view that's for sure. If you'd like to use the routines of MG BROWSE with your project, go ahead. The source is included. Besides the text display routines, there are also routines provide...
- Tue Mar 26, 2013 1:07 pm
- Forum: Programming
- Topic: 32 Column Screen query
- Replies: 8
- Views: 2244
Re: 32 Column Screen query
1) Will 24 cols fit on the TV screen (particularly on NTSC)? With PAL, not a problem at all, but it's on the edge for NTSC. Like here , where the biggest displayable screen size ended up at 23 columns. :( Otherwise 192x160 needs exactly the same memory as the 160x192 resolution of MINIGRAFIK. Doubl...
- Sat Mar 23, 2013 12:24 pm
- Forum: Programming
- Topic: Looking for a nice font for the VICMIDI software
- Replies: 4
- Views: 905
Here's a font I came up with lately: https://dateipfa.de/.Public/denial/images/tools/vicmidi.png If you'd like to use it, just tell me the format in which you'd incorporate it into your program (i.e., raw binary, hex dump, etc.) I expect [the code] to be no more than 4K when finished, and there's 8K...
- Sat Mar 23, 2013 12:19 pm
- Forum: Programming
- Topic: Cbmsh - A Unix-like shell for the commodores
- Replies: 43
- Views: 11909
- Sat Mar 23, 2013 10:40 am
- Forum: Programming
- Topic: Cbmsh - A Unix-like shell for the commodores
- Replies: 43
- Views: 11909
I'd also like to point out (once again), that when you're working with the VIC-20 itself - regardless whether on real hardware or in VICE -, what you see at the READY prompt is already a command line shell . You can even execute shell scripts there, in CBM BASIC! The BASIC V4 extension adds some com...
- Wed Mar 20, 2013 1:54 pm
- Forum: Programming
- Topic: Tile draw code optimization help
- Replies: 8
- Views: 2062
Re: Some memory savers
The zeropage-indexed-Y addressing mode is only supported by LDX and STX. LDA $00D9,Y works, though.wimoos wrote:LDA $D9,Y
- Mon Mar 18, 2013 4:34 pm
- Forum: Games
- Topic: New Release: Doom
- Replies: 328
- Views: 95773
- Mon Mar 18, 2013 2:42 pm
- Forum: Programming
- Topic: Get the first program to automatically load the next part
- Replies: 24
- Views: 2937
- Sun Mar 17, 2013 2:44 pm
- Forum: Programming
- Topic: Cbmsh - A Unix-like shell for the commodores
- Replies: 43
- Views: 11909
To get an impression what's available today, here's an expanded list of links to utilities I hinted at in my previous post: o VIC WEDGE (runs in *all* memory configurations!), o Kananga's VIN20 GUI with filebrowser , and o Plbyrd's CBM Command V2.1 . for completeness, I should also mention: o nbla00...
- Sun Mar 17, 2013 2:01 pm
- Forum: General Topics
- Topic: CBM FileBrowser for uIEC SD2IEC MMC2IEC
- Replies: 45
- Views: 29924
I'm glad you found out what was the culprit in case of the 2-character offset. Regards the initialisation problem of the colour RAM, hoping that nbla000 takes a look: You can do a common version for both V2 and V3 KERNALs with this trick: instead of just calling JSR CLEARSCREEN, do LDA $D021 PHA ; p...
- Sat Mar 16, 2013 5:42 pm
- Forum: General Topics
- Topic: CBM FileBrowser for uIEC SD2IEC MMC2IEC
- Replies: 45
- Views: 29924
- Sat Mar 16, 2013 2:49 pm
- Forum: General Topics
- Topic: CBM FileBrowser for uIEC SD2IEC MMC2IEC
- Replies: 45
- Views: 29924