Search found 4648 matches

by Mike
Mon Feb 11, 2013 2:29 pm
Forum: General Topics
Topic: Color Flickers
Replies: 8
Views: 1715

Unless your VIC-20 has been modded to output S-Video, you'd only have to connect composite video (yellow cord) and audio (white cord) to your TV set. Please check that the yellow cord connects to pin 4 of your DIN plug and that the white cord connects to pin 3. Here's how they are arranged when you ...
by Mike
Sun Feb 10, 2013 5:33 am
Forum: General Topics
Topic: Revision 2013 Invitation / Website out
Replies: 6
Views: 1260

This is a - small - issue I have with the demoscene in general. One of several - small - issues indeed. But I am not going to argue here. Either way: I will be attending the party and have this run on my VIC+Mega Cart. Whoever wants to see it/try it out is invited - don't forget to bring beer ;-) T...
by Mike
Sun Feb 10, 2013 5:10 am
Forum: General Topics
Topic: SQL experience needed
Replies: 12
Views: 1958

I also keep my fingers crossed. It's about time. In the 'International VIC' section a guest (Sedeinvenia) found a way to spam around. :evil:
by Mike
Sun Feb 10, 2013 5:03 am
Forum: Emulation and Cross Development
Topic: Minigrafik GIMP Plugin Development
Replies: 26
Views: 10262

Here I have another MG picture to test your GIMP plugin with: a Currywurst dish. ;)

Image
(download)

Greetings,

Michael
by Mike
Wed Feb 06, 2013 3:38 pm
Forum: Programming
Topic: DO .. LOOP in BASIC V2
Replies: 12
Views: 2116

No, you're mixing up expressions and statements. To clarify, most (imperative) programming languages make a difference between statements and expressions : A statement is some instruction or command which is intended to be executed by the language, e.g. PRINT, GOTO. In that sense, the LET statement ...
by Mike
Wed Feb 06, 2013 12:36 pm
Forum: Programming
Topic: DO .. LOOP in BASIC V2
Replies: 12
Views: 2116

Witzo wrote:How does this work?

Code: Select all

P=ST=0
This statement is not interpreted as double assignment in BASIC V2, rather the result of the Boolean expression ST=0 (either -1 if true, or 0 if false) is assigned to P.
by Mike
Mon Feb 04, 2013 12:27 pm
Forum: General Topics
Topic: What are the largest programs ever made for the Vic?
Replies: 21
Views: 3043

Do I understand correctly that originally, the Z-code interpreter required 35k of RAM expansion (3k RAM expansion + 32k RAM in BLK 1,2,3,5) but now will work correctly with on a standard 32k RAM expansion? There are actually two different Z-code interpreters being talked about: TNT's implementation...
by Mike
Mon Feb 04, 2013 11:38 am
Forum: General Topics
Topic: What are the largest programs ever made for the Vic?
Replies: 21
Views: 3043

Shouldn't the DOS Wedge be "invisible" in RAM? The FE3 DOS Wedge is copied from the firmware ROM to the address range $0400 .. $0FFF, which is then write protected by FE3, and thus not available for other programs. trying to turn the DOS wedge OFF freezes the VIC, but only with full RAM c...
by Mike
Sun Feb 03, 2013 2:15 am
Forum: General Topics
Topic: What are the largest programs ever made for the Vic?
Replies: 21
Views: 3043

Would XPander 3 also be an option to get over the 32K hump? You can combine a +3K RAM expansion and a +32K RAM expansion with a slot expander. Note though, that the external +3K expansion is blocked from BASIC use (RAM in BLK1 takes precedence) and will not show up as extra 'BYTES FREE', the BASIC ...
by Mike
Fri Feb 01, 2013 1:09 pm
Forum: General Topics
Topic: What are the largest programs ever made for the Vic?
Replies: 21
Views: 3043

[An animation in a smaller frame with <30 frames per second] almost seems doable in spite of the FE3's limits ... at least a simple demo could be pulled off? Let's see ... a 64x64 pixel bitmap needs 512 bytes, the FE3 RAM Disk achieves slightly more than 9 KB/s for load, which leads to ~18 frames p...
by Mike
Fri Feb 01, 2013 12:28 pm
Forum: General Topics
Topic: What are the largest programs ever made for the Vic?
Replies: 21
Views: 3043

You can refresh a whole MINIGRAFIK bitmap sans attributes nearly 30 times per second. See here . It 'just' needs a more flexible RAM expander than FE3, like this one: - 256 'pages' with 8K each, i.e. 2 MB in total, - 4 registers in the I/O area, for BLK1..3 and BLK5, which allow to map any of the 25...
by Mike
Fri Feb 01, 2013 12:06 pm
Forum: General Topics
Topic: What are the largest programs ever made for the Vic?
Replies: 21
Views: 3043

but how hard would it be to make an animated Dragon's Lair type game where the various frames of animation are bankswitched into the accessible memory of the VIC chip? The expansion port is not accessible by the VIC chip. Especially an external 3K expansion is not "seen" by VIC, even thou...
by Mike
Thu Jan 31, 2013 12:57 pm
Forum: Hardware and Tech
Topic: What is your VIC "video solution"?
Replies: 25
Views: 6883

I'm using a VIC-20 with S-Video mod , and a Commodore 1084. They are connected with a LCA cable made from a DIN to 4x RCA break-out adapter and a normal A/V cable. The colour markings on the RCA ends of the DIN adapter happened to match the inputs of the 1084 (yellow: luma, red: chroma, white: audio...
by Mike
Wed Jan 30, 2013 2:23 pm
Forum: Emulation and Cross Development
Topic: Minigrafik GIMP Plugin Development
Replies: 26
Views: 10262

Re: Minigrafik GIMP Plugin Development

Hi! It's nice to see some independent development regarding the MG picture file format. :D It sets the Gimp image type to indexed and sets the palette to a Vic-20 palette. http://people.myplace.net.au/~hawk@myplace.net.au/mike/retro_computing/vic-20/denial/Gimp%20plugin/GimpPluginColormap.png The ta...
by Mike
Tue Jan 29, 2013 1:00 am
Forum: Programming
Topic: New Platform Game Programming Tool
Replies: 12
Views: 3262

PhilRanger wrote:Thanks. I understand what you mean. I was hoping some overlay using scan might have been possible to avoid forcing the user to go to hi-res altogether but maybe I'm just dreaming!
I was not talking about a full-screen bitmap. Just the characters around the player position must be taken care of.