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by Mike
Thu Nov 23, 2017 12:36 am
Forum: Programming
Topic: Moving a .PRG for saving?
Replies: 12
Views: 91

Re: Moving a .PRG for saving?

Radical Brad wrote:Joystick has no response,

Indeed. The game is entirely keyboard controlled.

and I tried all the keys.

In the game, try out Z, C, f1 and f7 as per instructions. You'll need both hands. ;)

The intro melody has to play completely, before the game responds to any key to start.
by Mike
Wed Nov 22, 2017 3:44 pm
Forum: Programming
Topic: Moving a .PRG for saving?
Replies: 12
Views: 91

Re: Moving a .PRG for saving?

@Brad: PM sent. :)
by Mike
Wed Nov 22, 2017 3:04 pm
Forum: Programming
Topic: Moving a .PRG for saving?
Replies: 12
Views: 91

Re: Moving a .PRG for saving?

At this point, it was just a fun way to see some of the old programs and demos up on the VIC. When my project is completed, it will have its own ability to reach out to external sources and convert. Your OS still has a long way to go, though. If you insist that the VIC-20 shall only operate with st...
by Mike
Wed Nov 22, 2017 2:37 pm
Forum: Programming
Topic: Moving a .PRG for saving?
Replies: 12
Views: 91

Re: Moving a .PRG for saving?

Yes, that's what I meant with the "essentially unspecified source". ;) For cartridge images with load address $A000, you actually don't want the 2 bytes of the load address at $A000/$A001, the cartridge data is wrongly shifted by 2 bytes, and 2 bytes at the end are missing. You clearly wan...
by Mike
Wed Nov 22, 2017 2:14 pm
Forum: Programming
Topic: Moving a .PRG for saving?
Replies: 12
Views: 91

Re: Moving a .PRG for saving?

The files I will be uploading (.PRG) will most likely have both the location and size bytes intact. The load address, yes. The file length can only be inferred from the file system you stored the file in. Notwithstanding of course, that the original source indeed stored the complete file and did no...
by Mike
Wed Nov 22, 2017 1:07 pm
Forum: Programming
Topic: Photoshop for VIC-20
Replies: 3
Views: 62

Re: Photoshop for VIC-20

chitselb wrote:Is there some kind of bitmap/character editor that lets me get in there and edit the pixels on the screen in a more or less direct way, move characters around, that kind of thing? What do you other developers use?

MINIPAINT :)
by Mike
Wed Nov 22, 2017 12:56 pm
Forum: Programming
Topic: Moving a .PRG for saving?
Replies: 12
Views: 91

Re: Moving a .PRG for saving?

For *.prg files, the load address is part of the file (a two-byte header). This is an adopted convention from the KERNAL LOAD and SAVE calls. The load address does not appear in memory - at least not at a position 'near' the memory dump. A KERNAL SAVE call puts the load address in front of the memor...
by Mike
Wed Nov 22, 2017 10:59 am
Forum: Hardware and Tech
Topic: HASL for cartridges? (split/OT from: Cheese & Onion)
Replies: 51
Views: 265

Re: HASL for cartridges? (split/OT from: Cheese & Onion)

O.K. people - please take a good breath here and calm down. For the technically interested, I'd like to point to this article: "Surface finish on PCBs and why it matters for reproduction carts" ( link ). Gold plated edge connectors are, without doubt, the best choice. The poster in the art...
by Mike
Sun Nov 19, 2017 3:35 am
Forum: Programming
Topic: Programmer's Aid cart Block 5
Replies: 47
Views: 10210

Re: Programmer's Aid cart Block 5

The 27xx EPROM series can be programmed by most EPROMmers, including the TL866CS your ebay link points to.

Regards other chips and chip types, you'll have to check their library.
by Mike
Sat Nov 18, 2017 4:47 am
Forum: Programming
Topic: Programmer's Aid cart Block 5
Replies: 47
Views: 10210

Re: Programmer's Aid cart Block 5

Can you put the SE rom on a normal cart if you already have a 3k expander? If that +3K RAM expander is the one of CBM, that provides two places for (EP)ROMs. Actually, the Super Expander is just such a +3K RAM cartridge with an extra 4K ROM fitted, see here: Denial-WIKI: VIC-1211A inside . A progra...
by Mike
Thu Nov 16, 2017 8:16 am
Forum: Hardware and Tech
Topic: VIC-2000 Expander. Modern Power Using Retro Parts!
Replies: 103
Views: 1873

Re: VIC-2000 Expander. Modern Power Using Retro Parts!

I can't tell from the photo, is your HV supply a Marx setup, or Cockroft? Neither. The HV supply is located in another building and operates with thyristors, high voltage transformers, rectifiers and capacitors - each module is capable of supplying 35 kV@50 A, and they can be connected in parallel ...
by Mike
Thu Nov 16, 2017 4:51 am
Forum: Hardware and Tech
Topic: VIC-2000 Expander. Modern Power Using Retro Parts!
Replies: 103
Views: 1873

Re: VIC-2000 Expander. Modern Power Using Retro Parts!

When I was young, I had a huge interest in fixing old tube radios (1940-1950 stuff), [...] Those are my toys at work: :mrgreen: tube.jpg It's a CQK 200/4A vacuum tetrode subjected to a first isolation test with 30 Kilovolts between anode and grids. Behind you see the HV cabin of the test bench with...
by Mike
Wed Nov 15, 2017 3:51 pm
Forum: Hardware and Tech
Topic: VIC-2000 Expander. Modern Power Using Retro Parts!
Replies: 103
Views: 1873

Re: VIC-2000 Expander. Modern Power Using Retro Parts!

Sure, it will be cool to see a stock VIC-20 kick Amiga's ass 10x over, but it comes at a large investment in time. I am doing this because when I was 12 years old, I said I would. [...] At that time, there surely was a discrepancy to be felt between the (graphic) capabilities of the VIC-20, and wha...
by Mike
Wed Nov 15, 2017 9:27 am
Forum: Programming
Topic: MINIGRAFIK lineart
Replies: 9
Views: 174

Re: MINIGRAFIK lineart

What would you want to use it for? I want to use for very long diagonal like those used for the lighthouse. [...] Diagonal data: X 90 to100 : Y 85 to 190 XX 140 to 150 : YY 85 to 190 The built-in line drawing command obviously can put those on screen perfectly well with @1,90,85TO100,190 and @1,140...
by Mike
Tue Nov 14, 2017 8:31 am
Forum: Programming
Topic: MINIGRAFIK lineart
Replies: 9
Views: 174

Re: MG lineart - Lighthouse

Hi, Armando. I merged all your threads with MINIGRAFIK lineart into one thread. The chances are higher to keep up a coherent discussion if you don't open a new thread for each new example. There's an all-compassing topic title, which fits: "MINIGRAFIK lineart". Attached d64 files with auto...

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