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kelli217

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kelli217 last won the day on December 29 2020

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  1. The former case, while possible, is far less likely than the latter cases. The architecture was virtually identical between the 1000 and the 2000; the major differences were the Kickstart being stored in ROM on the 2000 and in a special protected RAM area on the 1000, and the Extra Half-Brite mode not being available on all 1000s.
  2. I can't speak for YazWho but if I had to guess I'd say something like changing the palette directly, or else shifting all the sprite foreground colors by a fixed offset, considering the default palette has gradients built into it after color 31. I don't remember if a raster interrupt is possible on the version of the emulator used here on the site, but some of the bigger brains here have pointed out ways to simulate one with careful timing and cycle counting.
  3. I'd love an X8. Even in the version that exists now.
  4. I wouldn't say 'simply' either — the Hi-Toro Amiga/Lorraine dev team made the early Daphne video output unit out of wire-wrapped TTL logic, but there were several boards, and it was prone to failure, as were the Agnus and Portia units that were similarly built. And that Daphne had — let's say, "comparable" video output to VERA. So yes, it can be done. But it definitely isn't as simple as throwing together a few discrete components, unless all you want is the equivalent of a PET display. And that is not what our gracious host wants. If he did, he'd be satisfied to leave things to The Future Was 8-Bit and their Mini PET kit.
  5. This recent discussion has raised a question in my head: How much would it cost to turn the VHDL for VERA into custom-fabricated fixed silicon?
  6. You're in luck. Facebook has been down for at least three hours today.
  7. It’s based on the RCA 1802, and nothing else but RAM, ROM, and TTL chips but will support full 4K HDMI graphics and custom multichannel multitimbral analog sound. The circuit board design is all being done with rubylith, since PNGs didn’t exist until the 1990s. And it doesn’t use EPROMs, it uses a totally blank ROM that is programmed electronically. I can’t be bothered to take the time to explain these seemingly impossible technical features, arbitrary decisions, and contradictions because I have to keep spending my time explaining how little time I have. Nor can I explain anything more about the system; I can only refer you to a link I once posted to a video about how rubylith circuit board design works. If you ask me about anything else regarding the system, I will simply assume you are asking about the board layout anyway. (delete if inappropriate)
  8. I have a Model III case and a page-white VGA monitor of the right dimensions to fit in it. They’ve been sitting around the house for the better part of two decades and I still haven’t done anything with them.
  9. There are a couple or three types of cars that can just about be fully replicated with third-party replacement parts. The Ford Model T, the Willys Jeep, and the VW Beetle come to mind. Everything else, though? There’ll be something crucial that is only existent in the original vehicle.
  10. I think the idea of having every machine being a 128D is a good one. That means that it would already have 64K of VRAM. Maybe give it a stereo SID. But otherwise I'd leave it alone. Instead I'd be thinking about the next evolution, and not the C65/C64DX. Or at least I wouldn't call it that. Maybe the "Commodore 256." It would be in the same form factor as the 128D, but with a 3.5" floppy drive (it would still have an IEC port to hook up older drives). I would want a video chip that is some sort of weird three-way hybrid between VIC-II, VDC, and TED. High resolution up to 640×400 and up to 121 colors, with 256K of VRAM so that the tradeoff between colors and resolution wasn't so onerous. I would expand the SID chip to eight voices, with each voice having the ability to be panned left or right, and adding an 8-bit sample generator with a max sample rate the same as the horizontal scan rate (15625 Hz for PAL and 15750 Hz for NTSC). In keeping with its name, it would come standard with 256K of RAM as well, with a hatch allowing access to a slot where the user could insert an extra RAM module that would fit entirely inside the case, available in sizes up to 4MB. The CPU would be able to access all of this RAM concurrently, and then some, because it would be a 65C816. Eventually as RAM became cheaper the modules might eventually reach sizes up to 16MB. It would have compatibility modes for the 64 and the 128, but in a nod to the rest of the world, it would also have an ASCII mode. It might even have a hybrid mode where the character codes from 32 through 128 would be their ASCII equivalents but everything else would remain as their PETSCII definitions. It would also have a Centronics-compatible parallel port and a serial port that used proper RS-232 voltages. Lastly, it would have a reasonable cursor key layout, probably something like the Amiga 1000's instead of ↕↔ or ⬅⬆⬇➡.
  11. The audience being targeted is not just us old farts who remember all these old details, but the newbies who are just getting into the scene and don't know that TRS-80s say CLS to clear the screen while Apple IIs say HOME and Commodore 64s say PRINT CHR$(147).
  12. Gyruss's arrangement of "Toccata," by Sky, based on J. S. Bach's Toccata and Fugue in D Minor, BWV 565...
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