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New discovery on Z80 interrupts.This is to announce the discovery of a new, hitherto unknown, behavior of the RETI and RETN instructions. As everyone knows, the maskable interrup…
... /> As everyone knows, the maskable interrupt can be enabled and disabled ... control the state of the interrupt enable flip-flops (IFF1 ... not accept this kind of interrupt directly after an EI ... the acceptance of the maskable interrupt for one instruction, but ... -
Hardware Reference Manual for ZX SpectrumHi, I want to write games for ZX Spectrum in assembly language. I have lot of books in PDF format from SpectrumComputing. Still missing a book lik…
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Copperlist support, Vert_blank interrupt
Graphic mode selection for ... -
CopperlistIf anyone knows how to create copperlist for ZX Spectrum? Vertical blank interrupt handling?
If anyone knows how to create copperlist for ZX Spectrum?
Vertical blank interrupt handling? -
Standard Development LibrariesSo after some time away I decided to re-register after a Twitter thread (https://twitter.com/SpectrumNez/status/1578158361236963328) led me to a Visu…
... and so on. Setting up interrupt tables and all that sort ... -
Exact emulation of the Snow effectAs the original post on another forum is outdated, and for those who don't know about that forum, I duplicate this info here: At the beginning of …
... point to slow memory, and interrupt vector does not get into ... -
Dos emulators / games & Win XPHaving just brought a new computer which comes with XP I am having difficulty running my usual spectrum emulator (Z80). When I run it, it runs in a D…
... !) and the excellent QEMM memory manager (u can run memory hogging ... -
Taper / WinXP /SB ProbsDoes anyone know how I can get Taper to recognise my SB Live soundcard under Windows XP. The readme.txt mentions the BLASTER environment variable bu…
... being the port, I the interrupt and D the Direct Memory ... -
A DOS question, slightly OTI have an old laptop (a P75) which is great for Spectrum emulation (X128 ), and C64 emulation (CCS64), and I want to emulate the Atari ST, too. Now, …
... -program.
This is a interrupt steered program which would read ...
