Quote from: andycadley on Yesterday at 15:49I think it's one of those thing where, in order to accomplish it from a hardware perspective, you'd have had to completely redesign how the hardware worked. At which point you're basically designing a brand new console from scratch. And that was out of scope for what the GX project was.Because the cartridge media and the fact there is an unlock sequence to access the Plus features, in 1990, it would have been possible to run the Z80 at 6MHz or 8MHz for that usage and the CRTC respectively at 1.5MHz or 2MHz to provide the new 256 or 320 screen modes with 16 colours + the sprites over that. No impact for the CPC compatibility while using tape or floppy programs.
Cliff Lawson once said to me that, in essence, if they hadn't broadly used the CPC design, they couldn't afford the R&D costs. It's why it's not a 16-bit machine, why the sprites have to work without impacting on memory bandwidth, why the display modes are still limited to those the original machines had and why things like DMA music is tied to reading data at the same rate the screen display runs etc.
Quote from: andycadley on Yesterday at 15:49Cliff Lawson once said to me that, in essence, if they hadn't broadly used the CPC design, they couldn't afford the R&D costs. It's why it's not a 16-bit machine, why the sprites have to work without impacting on memory bandwidth, why the display modes are still limited to those the original machines had and why things like DMA music is tied to reading data at the same rate the screen display runs etc.Something else to consider as well back then, but even with the minimal changes that were made, look at all the backward compatibility craziness that happened. Keyboard scanning bugs for games, and then there were the newer port standards which made it a complete nightmare for third party manufacturers.
Quote from: Sykobee (Briggsy) on Yesterday at 13:50The CPC video scanning is very linked to the CPU clock and access to the memory bus, it wouldn't be simple to have a different pixel clock like the NES/Spectrum.I don't said it is simple, but it is missing. I can understand for the CPC but not for the Plus/GX.
Quote from: TotO on 13:12, 28 January 23The problematic is more to be not able to switch the horizontal clock for the 256x256 display in full screen.The CPC video scanning is very linked to the CPU clock and access to the memory bus, it wouldn't be simple to have a different pixel clock like the NES/Spectrum.
About better Spectrum ports, it will require a 1bit mode with colour attribute and a lineal video memory.
Quote from: Nich on Yesterday at 00:01Awesome Nich, be careful advertising your skills around like that. You'll end up with very long lists from the likes of gobshites like me.Quote from: Shaun M. Neary on 00:09, 15 October 22Got a couple of requests if anyone is interested?A 64K-compatible crack of Karnov is now available from NVG.
1) Karnov. It doesn't appear to be in my set so not sure if it was ever done. It was 64k so surely this can be done?However I had to perform a lot of compression to get it to fit on one side of a disc. hERMOL at CPCRulez also produced a 64K-compatible crack a couple of months ago, so take your choice.
I can fully understand why there have been so few attempts to crack Karnov. It was a nightmare to get it to work with 64K of RAM - lots of juggling blocks of memory around!
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