Quote from: zhulien on Today at 18:12If there are additional bits in the GA are they actually working bits or dormat?There aren't any actual "bits", it's just gaps in the address space or decoding where, if you were designing a more advanced chip, you could theoretically put additional functionality without altering existing behaviour.
QuoteThe LUM input on a GT65 can be more or less used like a composite input. Amstrad used the seperate Sync signal mainly for the colour monitors but also used it to enhance the sharpness on the monochrome monitors although the sync signal is also superimposed onto the LUM signal already. Try connecting the composite out of the other computer just to LUM and GND. It should give you an ok picture.
Quote from: abalore on Today at 14:25If there are additional bits in the GA are they actually working bits or dormat?Quote from: GUNHED on Yesterday at 22:31Quote from: Bread80 on 21:57, 25 September 23Would be nice to have this ASIC expanded from 15 to 255 sprite colors (the space is there. only 4 bits are used of each 8 bit for every dot in the sprite data area). Well, of course it would need to double the internal RAM of the ASIC. Just an idea.Quote from: d_kef on 16:59, 24 September 23That's a really great idea! Thanks for open sourcing it.Do you mean ASIC as in the Plus models or the gate array? If it's the latter I have a prototype working replacement using a pair of RP2040 (RPi Pico) which needs miniaturising and finishing off.
Are there also plans for an ASIC module?
I find also interesting to expand the CPC palette to 32 colors, the bit provision for it already exists in the GA.
Quote from: Blue_0724 on Today at 13:13The Amstrad GT64 does not have a composite video input. Only RGB, sync and lum.Luminance is kind of a monochrome composite video signal.
Quote from: abalore on Today at 12:18You can also try to connect the composite video directly to the composite input without the ICdid ou mean Lum?