-
Interrupt routineI have been trying to create an interrupt routine for playing AY music in the background but cant seem to get anything working. I have a music rou…
... been trying to create an interrupt routine for playing AY music in ... />
I have a music routine in bank 6 that plays ... /> Does the bank switching mean interrupt routines cant be used?
Monitor/debugger that doesn't use the Speccy ROM?Was there ever a Spectrum monitor/debugger released that didn't use the ROM, for key input and character output routines? The reason I ask is that i…
... indicate that it uses the IM1 interrupt routine for reading the keyboard, but ...Is the original divIDE compatible with Interface 1Is the original divIDE hardware compatible with Interface 1 ? I would like to use the divIDE and Microdrives connected at the same time. Is this pos…
... connected ?
The NMI routine of the divIDE should also ... 8
#0038 = IM1 interrupt routine
#0066 = NMI routine
#04C6 = SAVE
The Hobbit 128K editionWhat's this?<br>What better to celebrate the new forum with, than a long-awaited release!<br><br>I got tired of all the quibbling over tiny details i…
... do mad things while in IM1 with the 128K flag bit ... (page) is ignored by the IM1 interrupt routine, also this 58880 update. It ...DIVIDE versus ZX128 ROMDivide interface use hardware mapping of extra memory on this fixed points in 48rom: #0000 - power-on/reset/rst0/software restart #0008 - syntax erro…
... - im1 interrupt/rst #38
#0066 - nmi routine
#04C6 - tape save routine
#0562 - tape load and verify routine
#3D00 to #3DFF - tr ...that "listing variables during runtime" thingWell, I did eventually finish this, but with my meds playing up I don't have much time each day that I can spend at the computer, so it's taken rathe…
... separate IM2 interrupt routine I decided to use IM1 and BREAK ... to call the routine, and then ... Part the 5th - the relocation routine assembler listing:
[url] ... absolute addresses within the target routine, which would otherwise become ...Interupt service routinehas anyone set up a interupt service routing with pasmo? this one I tried resets the speccy EDIt- I placed the code after the END directive, I fi…
... byte.
im 2 ; Select interrupt mode 2.
ei ; enable ... /> org 65024
; pointers To interrupt routine.
defb 200
defb ...ZEsarUX 8.1 stableHi! I've uploaded a new ZEsarUX 8.1 stable version. Go to the github released webpage to download it: https://github.com/chernandezba/zesaru…
...
-debug CPU window: show interrupt routine pointer on im2 mode
IM1
Fixed RETI behaviour
VSYNC FunctionI have written a VSYNC function, so that I can clear the screen before redraw without flicker on the screen, I do this by peeking at the address 2367…
... z80 in im1 mode, which means an interrupt causes a ... if the z80 is in im1 mode, asm or not ... im2 mode and write an interrupt routine that simply does an ... around 19 cycles following the interrupt.
A ... to see if an interrupt occurs. This depends on ...Interrupts details questionSuppose I am writing a game and I want to use interrupts to measure time, draw the screen without flicker, maybe to poll keyboard etc. What kinds of …
... TV], the ULA(?) generates a interrupt and is doing this 50 ... ?
(Dont answer before the interrupt occurs)
I am trying ... . if interrupt (IM 0, IM1, IM2) is enabled, processor jumps to interrupt routine (TIME ...Interrupts details questionSuppose I am writing a game and I want to use interrupts to measure time, draw the screen without flicker, maybe to poll keyboard etc. What kinds of …
... snapshot file I set the interrupt flipflop byte to 0, because ... 0 ;IX
.byte $ff ;Interrupt (bit 2 contains IFF2, 1 ... 2 ;IntMode (0=IM0/1=IM1/2=IM2)
.byte 4 ... /> jr repeat
; interrupt routine
; it does the same ...ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... the ULA is generating an interrupt each 1/50s at the ... the z80 in im1 mode, which means when this interrupt occurs code ... to set up our own interrupt routine and another way is to ...The BASIC ISRFirst of all, excuse me if my blatant ignorance about this topic makes me write some nonsense :) The thing is that I'm finishing a game in mixed BAS…
... all of these in the interrupt service routine. Also, if you are ... have to go back to IM1 mode before accessing the RAMdisk ... ? This assumes your player and interrupt routine is located in the top ...How does interrupts work?I am a little confused regarding the interrupts on the Spectrum. If I have some hundred bytes of machine code started with, say, [B]RANDOMIZE USR 300…
... the z80 in IM1, which means when an interrupt occurs the ... code executed inside an interrupt service routine (such as the ROM ... is being executed, all interrupt service routines must preserve all ... polls the keyboard in the interrupt routine. The z80 must scan ...He's back......and he's got a new trick! AY Chip here. I've been away far too long. I would like to announce 'HatStand': for no adequately explored reason, I h…
Because that's the interrupt mode it's in. You ... can change the interrupt mode with instructions IM0, IM1 and IM2. Interrupts ... behaviour by selecting a different interrupt mode. IIRC mode 2 is ... of the addess of the interrupt routine were the same then filled ...IY RegisterIve got a really bizarre bug, and I have only just started using the IY register. I seem to remember reading somewhere in a programming book, to neve…
IY is used by the rom interrupt routine. If you have im1 interrupts running your program is going to crash.Tinkering with Quique Llar?a's Midi2Ay tool...Im tinkering with Quique Llar?a's Midi2Ay tool, found at: [url]ftp://ftp.worldofspectrum.org/pub/sinclair/tools/pc/midi2ay-0.1.zip[/url] Im not a v…
... music will play during the interrupt
the ...
; entry to the im2 interrupt routine
; save registers used here ... ; incidentally one should always terminate interrupt routines with reti so that ... were not returning to im1 mode so that the ...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 …
... get back from that routine at all, out'ing ... the duration of the routine. If they need to ... be enabled while the routine is running then sys ... br /> The rom IM1 interrupt, upon hitting an interrupt checks bit 4 of ... during the course of the interrupt.
As ...Howto paint a squared zone of the screen ?You know what guys ? i begin to love this languaje. Cant understand why not put more effort on the 80's to learn it :( because it is really speedy. …
The routine can be only executed twice ... +1=23611) updated with default IM1 interrupt handler. The handler polls the ...Z80 Processor Interupt helpHi everyone, Currently designing a Z80 computer and i need a little help with these interupts. If i have an I/O device that sends a pulse to the int…
... begin execution at address 0038h (interrupt routine)
- IM 2: ... be performed (interrupt routine).
For IM1 and IM2, ... to jump to the interrupt routine. For IM0, it ... TMS to acknoledge the interrupt, from the interrupt routine.
...Simple explanation of interrupts (in the context of Z80/Speccy)I wondered if somebody on here could explain in simple terms how interrupts work on the Speccy and where interrupts are source from. Are they a natur…
... taken to handle the actual interrupt itself is almost certainly significantly ... in the interrupt routine. That's far more significant.[/QUOTE]An IM1 interupt ... the start of the interupt routine is about the speed of ...RAM used / corrupted by +3DOSAs I said previously, [url=http://www.worldofspectrum.org/forums/showthread.php?t=41775]I'm trying to put some games in hard disk[/url] so they can b…
... thread, or unless a different interrupt routine has been loaded, the +2A ... disk motor timeout routine as part of the interrupt procedure.
routine shifting stuff around - including the ... I had to change to IM1 while I was using DOS ...30-column 8x2 multicolor (even in 48K)I don't recall any 8x2 multicolor routine for 30 columns that would work on all Spectrum models (including the Spectrum 48K), so I decided to write i…
... for an IM1 interrupt to occur, which means the Speccy ROM routine kicks ...30-column 8x2 multicolor (even in 48K)I don't recall any 8x2 multicolor routine for 30 columns that would work on all Spectrum models (including the Spectrum 48K), so I decided to write i…
... for an IM1 interrupt to occur, which means the Speccy ROM routine kicks ... later models freezing, and the IM1 can vary as much as ...Mountains of Ket - Written in Basic?Was Mountains of Ket written in Basic? And if so is there any way to break into it? The parser's pretty impressive, I want to see how it was done.
... continue with the normal maskable interrupt routine.
Replace with "POP AF ... disable the IM2 routine and resume the normal IM1 mode, then press ... />
The TAP version uses IM1 and changes the error return ...
