read colours #154
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read colours #154
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reads colours, either from the palette, or one of the active colours this is done using `VDU 23, 0, &94, colour`. values will be returned using the `PACKET_SCRPIXEL` response packet, and therefore MOS will interpret these exactly the same as reading a screen pixel via `VDU 23, 0, &84`. values will therefore be exposed in MOS in the exact same `scrpixel` and `scrpixelIndex` sysvar bytes when using this command, colours 0-63 will be interpreted as palette colours, 128 will return the currently selected text foreground colour, 129 the text background colour, 130 graphics foreground, and 131 graphics background. any other colour values will be ignored
avalonbits
approved these changes
Dec 16, 2023
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reads colours, either from the palette, or one of the active colours
this is done using
VDU 23, 0, &94, colour. values will be returned using thePACKET_SCRPIXELresponse packet, and therefore MOS will interpret these exactly the same as reading a screen pixel viaVDU 23, 0, &84. values will therefore be exposed in MOS in the exact samescrpixelandscrpixelIndexsysvar byteswhen using this command, colours 0-63 will be interpreted as palette colours, 128 will return the currently selected text foreground colour, 129 the text background colour, 130 graphics foreground, and 131 graphics background. any other colour values will be ignored
addresses #145