Exclamation point?

Frequently Asked Questions about the Sinclair ZX81
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Re: Exclamation point?

Post by mrtinb »

RS232 wrote: Tue Jun 04, 2024 11:07 pm Ok why a whole rom when you could just create a UDG for it under EightyOne emulator?
You assume that the use of a ZX81 is mainly in an emulator that supports UDG. If that's the case, then by all means do use UDG.

Many like to use real hardware however, and real hardware that supports UDG is rare.
  • dK'tronics 4K Graphics ROM
  • Quicksilver QS CHRS Board
  • UDG4ZXpand
  • Chroma interface
ZX81, Lambda 8300, Commodore 64, Mac G4 Cube
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Re: Exclamation point?

Post by XavSnap »

Martin, note the ZXPRINTER printer can "Display" specials characters codes by moving the IR register on a RAM offset!
The ULA display will be corrupt, but the printer UDG will be changed.

In Forth:
~@~ is equal to ~£~ and ~!~ is equal to ~$~ on ZX81
~[~ is equal to ~-(~ and ~]~ is equal to ~)-~ ,
~'~ is equal to ~(?)~
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Xavier ...on the Facebook groupe : "Zx81 France"(fr)
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