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Rainbow Generator for 48K Spectrum using PUSHThis is what I came up with from [B]gasman[/B]'s suggestions. It's stable in ZXSpin and ZX32 simulating a 48K Speccy. Anyone like to try it on the …
... ;---------------------
interrupts_on
;Configure interrupt vector table,
;set 65024 ...
IM 1 ;Select interrupt mode 1 (system)
... />
;Main interrupt routine:
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interrupt_main
FLASH EPROM programming on ZXExist any other software for rewriting FLASH EPROM or EEPROM chips on real ZX ? I know only: EEPROM flasher for original DivIDE [url]http://85.132.…
... /> ld hl, $4000 ;
di ; interrupt must be disabled (rom will ...Doubling the Spectrum's resolution?Before the advent of digital, PAL TV sets had a resolution of about 702x576 pixels. It was overscanned (i.e. the edges of the broadcast picture would…
... display page with an IM2 interrupt routine, it should be possible ... telling it to skip one interrupt cycle.
2. To ...SP and IM2 woesI have a function that writes the backbuffer to the screen using the method by which SP is stored, I "POP" a load of registers and then chnge SP to t…
... />
I want to put interrupt driven sound and music in ... as I Enable the IM2 interrupt, the screen gets corrupt (All ...packers / crunchers and general compressionI'm just curious where I would find such things, coming from a c64 background also , there is shedloads. I mean the obvious things like crunchers fo…
... do realtime de-packs under interrupt if there is such things ...Need help with interrupts againI'm fighting to understand how interrupts code handling works I'm trying to set my simple own interrupt routine, as I don't want to be dependent on …
... sstem variables normally and Basic interrupt routine overwrites this memory.
interrupt
;each interrupt automatically disables interrupts, so ... /> Unfortunately even after setting this interrupt, Spectum still seems to mess ...Help fix this keyboard read program?This code runs in an interrupt routine with DI. What would be the simplest way of making it so it doesn't auto repeat a keypress? [code]keys: ld a…
This code runs in an interrupt routine with DI.
...Midi Out from machine codeI need to send midi-signals by machine code, while Basic is too slow for my current project. I already read I can use hookcode #11E, but I have some …
... 48K Basic together with an interrupt routine which sends the midi ...Tricks with IN 31It's generally considered unwise to use a Kempston joystick's fire button to start a game, because the floating bus effect can make arbitrary data ap…
... upper border (using a short interrupt routine in IM2 to make ...Emulator to create log files?Could someone please recommend a Spectrum 128K emulator that can dump the following data to an external text file, while emulating at normal speed? …
... T-states since the last interrupt, at the entry point of ... the interrupt routine and at a single ... the entry point of the interrupt routine.
Failing that ... be written from within the interrupt routine.+2A extended memory map & ULA bug?The [URL="http://www.worldofspectrum.org/faq/reference/128kreference.htm"]128K reference page[/URL] says: [quote]The ULA bug which causes snow when I…
... -0x3FFF, and place my own interrupt handler at 0x0038 to be ...A question about M1 cyclesI'm writing an interrupt routine that, after the usual register pushes, will jump to a location of my choice with a [b]JP (IY)[/b] instruction. If I…
I'm writing an interrupt routine that, after the usual ... only manifest itself if an interrupt pulse occurred [b][i]during ...Floating bus on 128K models[b]Background:[/b] i need run code with interrupt enabled but i need use stack instruction to maximize performance in copy/shift/mirror routines. dur…
... ] i need run code with interrupt enabled but i need use ...Xmas / NY present for all ZX UsersHi there, wasn't sure where this should go, but this is a couple of years "work" during free time while not in the office. This is a package of 480 o…
... , IM2 loaders etc etc ), and interrupt fixed (no more audio slowdowns ...Sys64 - bug foundI've found experimentally on real ZX Spectrum and on emulator that [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0008823"]Ron Seniscal's SYS…
... . Exaimining the code of the interrupt routine I noticed that the ... Interface1 remains active during the interrupt and the Spectrum HALTs waiting ...ZX80 and 81 hardware questionsI'm finding a lot of the documentation that is ostensibly about the hardware of the ZX80 and 81 to be primarily about the software. I was hoping some…
... />
M1 + IOREQ active (ie, interrupt acknowledge) triggers horizontal sync, with ...Z80 sound enginesI'm looking for a decent sound engine to use in a Z80 program I'm writing, but I've no idea which is the best/fastest/easiest to use. I could do wit…
... least amount of time every interrupt.
I tried Romford from ...Empire "Mega" PatchI've been posting [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0001619"]Empire[/URL] related bits and pieces [URL="http://www.worldofspectr…
... ?[/B]
[LIST]
[*]The interrupt vector so the game can ... ,121,118,-1404: REM FIX INTERRUPT VECTOR
210 DATA 33 ...Would you be an organ donor?I don't know what prompted it, but at work I overheard a typist tell another that she'd never sign up to be an organ donor as if you were dying in ho…
... I didn't want to interrupt plus I was working) so ...A z88dk + sp1 demo (with source)Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how e…
Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how easy it actually is. (Actually I've already published this one some time ago, but this time the source is ...Disable interrupts?Well, I've read the bits from the David Webb book about interrupt modes and (vaguely) appreciate the principles behind having a vector table, after r…
... the David Webb book about interrupt modes and (vaguely) appreciate the ...Multicolour demo using z88dk + BIFROST* (+source)This is just a demo to show how to show multicolour using z88dk, using the BIFROST* engine (more info [URL="http://www.worldofspectrum.org/forums/sho…
This is just a demo to show how to show multicolour using z88dk, using the BIFROST* engine (more info [URL="http://www.worldofspectrum.org/forums/showthread.php?p=608777"]here[/URL]).
[IMG]http://www.image-share.com/upload/1337/164.png[/IMG]< ...ZXodus II previewAlthough ZXodus II is still under development, the author Andrew Owen authorized me to make this "preview version" available for anyone interested on…
... music
[*]BEEP effects
[*]Interrupt manager (supports defining additional interrupts ...Interrupting emulation if Multiface isn't availableA few years ago I asked about how to exit to BASIC when the BASIC environment is still available and stable. Now I have a similar question... Certai…
... unavailable. If I want to interrupt emulation and return to BASIC ...countdown timer ?just curious if there was a pre-made one about that I could use to count down from 999 to 0. in MC / under interrupt, that returns to basic? but how…
Byte-order backbufferThis is a tool for Z80 coders who wish the Spectrum screen had a serial layout. It runs as an interrupt mode 2 service routine and uses POP and PUSH …
... .
It runs as an interrupt mode 2 service routine and ... /> jp 56 ; exit via BASIC interrupt handler
blit: ; subroutine ... /> jp im_main ; jump to main interrupt handler
org 0xfff7 ...
