Started by ArcadeTV, 03:27, 28 October 14
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QuoteTo complement, you may like to know that in the CPC firmware there is provision to increase this frequency to 60 Hz, which suits the NTCS standard. There is one bridge in the board for this setting, the firmware detects its state when it boots and re-programs the CRTC to match the selected frequency (either 50(.08)Hz or 60(.someting)Hz). In real practice I believe this wasn't used as long as the computer came with its own monitor, but I'm not sure, maybe in the USA market they came configured for 60Hz.
Quote from: MacDeath on 22:46, 29 October 14Also to run video at 60hz... wouldn't it simply slows the CPU actually as Video circuit would read more often into the (V)RAM ?
Quote from: Bryce on 13:47, 30 October 14They are 8 bit DACs, so you would use just the lower 4 bits (upper bits grounded)
Quote from: TotO on 16:00, 30 October 14As I know, that will just transform a 8bit DAC to a 4bit DAC???00000000000000110000110000001111001100000011001100111100001111111100000011000011110011001100111111110000111100111111110011111111Vref is used to define the full range, the DAC don't know that you only want to use the 4LSB ?
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