incorrect processing of out (c),0 in kay-1024 !!!
ZXNet echo conference «code.zx»
From Eugene Palenock → To All 13 April 2001
Hello All!
Source - z80s config. You need to be aware of this problem when developing software - otherwise
such software may not work on kay-1024. And this is the only one being produced now
Spectrum.
=== Home Windows Clipboard ===
+=============================================================+
| The OUT (C),0 instruction is emulated incorrectly! |
+=============================================================+
Everything is emulated correctly. The fact is that on different processors this command
leads to different results: for example, on Z84 (in the KAY-1024 computer)
it works like OUT(C),255. Therefore, if you chose computer emulation
KAY-1024 (or entered 'Z84=YES' in the configuration file), then instead of OUT (C),0
get OUT (C),255.
===End of Windows Clipboard ===
* Original written in CODE.ZX
*Copied to REAL.SPECCY
*Copied to ZX.SPECTRUM
Best regards, Evgeniy.