| ??? 09/01/04 15:04 Read: times |
#76762 - RE: Revisiting video & emulation Responding to: ???'s previous message |
So, PCs don't use Pentiums to drive gfx, simply because pentiums are far behind the specs of the gfx card chipsets :) Exactly. And the 8052 is even further behind that. It just seems to me we could do much more impressive things with this computer if we were not limited by our own custom graphics hack. We can always use a standard ISA VGA :) Are those still easy to come by? I have a couple in my parts box but if someone didn't have an old ISA VGA card and wanted to build this thing how hard would it be to find one of those? But I think we'd need just some analog circuitry besides the '51 to convert 8-bit into video levels. If we ignore the option of utilizing a card, how much circuitry would be required to use a VGA chipset in the computer itself? I.e., include the VGA chipset as part of the "motherboard", so to speak? I'd be perfectly happy with monochrome grayscale display, though 1-bit b/w would be acceptable too. (I think "native 51" v1 should be 1-bit, the 6502-emulator v2 should be either mono or color, depending on what we learn from the 1-bit... I guess one option, like you said, is to make the first version a low-resolution version with video driven by a high-speed 8052 and then, once that's done, consider if/how to implement a higher-resolution/color version later. I'm still not sure, though, since I'm really drawn to the possibility of having an 8052-based computer with VGA graphics capabilities. Regards, Craig Steiner |
