Post #2849072

Away from the PC, I’m having a bash at designing an ASCII font whose printable characters all leave the most and least significant bits clear, so that they can be used as colour attributes when required. Imagine the BBC Micro’s mode 0 but with four colours selectable per line per character. Handy for 80-column program listing with highlighted keywords and errors. Characters 0-31 will hold the values 0-255, because the bitmapped graphics mode will be a special case of character mode comprising 256 x 1-byte characters whose values equal their codes. These values also conveniently double as an identity table for synthesising extra opcodes, which the system can guarantee available to software, and ensures the whole 2KB are useful.