Feature request: PETSCII FLASH ON and FLASH OFF

commanderx16 / x16-rom

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Feature request: PETSCII FLASH ON and FLASH OFF #162

Open bobbyjim opened 4 years ago

bobbyjim commented 4 years ago

Apparently, the C128 and C65 use the unused $0F and $8F to turn on/off the flashing cursor. Can we have that?

mist64 commented 2 years ago

These machines had video chips that supported flashing in hardware. For the X16, we would need a software implementation, which would be kind of complex. 80x30/8 = 300 bytes of RAM to know which characters are flashing – or halve number of fg or bg colors and store the bit in the color byte; significant CPU time whenever we need to invert the characters...