Reply 20 of 41, by GunKneeNeon
Grzyb wrote on 2023-05-28, 20:29:
With 16 colors, 36 MHz pixel clock = 56 Hz refresh rate... With 256 colors, a pixel actually needs 2 clock cycles, so the same r […]
With 16 colors, 36 MHz pixel clock = 56 Hz refresh rate...
With 256 colors, a pixel actually needs 2 clock cycles, so the same refresh rate requires 72 MHz pixel clock...
That would make perfect sense, but 8800 and 9000C are completely different chips, the latter is newer and shouldn't have that limitation.
Again, must be something wrong with configuration and/or software, something that makes it behave like the 8800.
Ok, the problem has been found. Is there any way to flash the BIOS through some utility? I downloaded the BIOS before and opened the files with UltraEdit. The 64kb .bin file showed the version of C4.3 10/15/93, which is earlier than mine. The 32kb .VBI file on the other hand showed the version of C4.4 12/13/93, which is newer than mine. I'm planning to try these rom files out, but haven't got the utility.
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