-
Arkos TrackerHi all, I'm proud to present you my Windows-based Tracker : Arkos Tracker, for you to compose for Spectrum, CPC and MSX. It requires .NET 3.5 at lea…
... --tapbas player.s arkos.tap) and two example taps.
IM2 Lookup table
ld a ... /> main_loop
; wait refresh
halt
; Wait a few ... -
Assembly Programming for IDIOTSOk are there any websites guides for what opcodes do in a z80 or books... but for really really thick people like me :-) Something along the lines …
... up interrupt mode 2 'IM2'. It also explains everything ... the TV display. The 'HALT' instruction becomes a 'NOP' ... (disable interrupt) instruction, the 'HALT' command will never detect the ... ' instruction between the 'HALT' instruction and the next instruction that ... -
Hacking the O.C.P Full Screen Editor/AssemblerIf you have been reading my posts recently then you will know that I am eager to have the sourcecode I wrote for the Spectrum during the period 1988 …
... spent documenting the process and preparing examples for ... assembler has fixed columns and pads out characters ...
ksjp20 halt
ld a,1
and used IM2. The data for ... -drive based cross-assemblers and real-time debugging tools ... -
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…
... do away with interrupts and just use HALT for timing, then immediately ... enabled to use HALT. Even the shortest possible IM2 routine - a single ... -
Genesis: dawn of a new day, new game from RetroWorks!It's been a long development, but finally we made it. We proudly present the latest game from RetroWorks, Genesis: dawn of a new day. [img]http://ww…
... ). Load game, enter to debugger and write this code:
nop ;can be used HALT for 100% correct mouse testing ... a,(#df)
cpl
and 3
jr z,#c3cc ... to adress #8000 (begin of IM2 table)
It's ... -
Sprites masterclassHi All, You guys are probably tired of explaining sprites but I'd like to clarify a few things if possible. I've sorted the vertical aspect of scro…
... again, then loops around and around. This is why everything ... running it under an IM2 interrupt routine, and provided you synch ...
call demoa2
halt
ld hl,demo_bank2
call demoa2
halt
jr demoa1
;< ... -
BEEPER Demo: "9 CHANNELS" (ZX48)Hi my friends. Another year, another demo for Spectrum 48K. :) This time - "9 channels" demo, for BEEPER fans. [url]http://pouet.net/prod.php?wh…
... game in place of a HALT after the main loop has ... out of the music loop and back into the main loop ... to constantly monitor an IM2 driven counter AND the main loop will ... -
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…
... actually pretty complex, and shows many things like ...
****************************************/
// C and SP1 code libraries are added ...
// malloc and free talken from the sample ... with some arbitrary patterns, and draw it.
... -
BorderTron 3000A little bit of speccy-related fun for a Friday afternoon... I've knocked together a program for Windows which I've called Bordertron 3000 (a suitabl…
... , I'm pretty sure an IM2 AY player would completely knacker ... of time to complete. A HALT instruction (assuming that's how ... error from early/late timings, and you end up with too ... -
Outrun Europa in colourSwainy suggested that he'd like to try his luck with Outrun Europa colorful graphics and see if they can be improved. Let's give him the chance :) A…
... interrupts disabled, without a single HALT or any other attempt to ... the house in old position and part of it in a ... what and is more noticeable now.[/QUOTE]
Putting a HALT ... in before the screen update, and using a RET as the IM2 ... -
In Java for ZXHi All I am glad to notify you that I have opened the sources of my J2Z80 translator (0.1 version) which allows to use Java toolchain to generate Z8…
... 630423]what about examples and documentation, the project includes examples ... which uses JNI and many other and everybody can just ... I just checked MemoryFillerNative.java and MemoryFillerNative.asm (BTW the ... Can it HALT? Can it set an IM2 routine, and in this ... -
In Java for ZXHi All I am glad to notify you that I have opened the sources of my J2Z80 translator (0.1 version) which allows to use Java toolchain to generate Z8…
... ? Can it HALT? Can it set an IM2 routine, and in this case ... be loaded at specific addresses, and how can it reserve memory ... -
Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…
... for screen sync in menu and during game. On +2A/+3 ... models and on all ZX clones without port #FF game halt....
IM2 interrupt jump to incorrect adress ... (usable with all ZX roms) and disabled "#FF synchronisation" :
[url ... -
Some thoughs about fast scrolling on 128 modelPlease, consider this article as technically interesting concept not a proven algorithm. ONE The fastest scrollers use long sequence of PUSH inst…
... /> and those first games probably just use a lot off HALT instructions ... ultimately, lead to memory corruption. And you cannot use standard trick ... /> The only way to get IM2 working in 16K reliably would ... can also sync simply using HALT. However, when I look ... -
Some thoughs about fast scrolling on 128 modelPlease, consider this article as technically interesting concept not a proven algorithm. ONE The fastest scrollers use long sequence of PUSH inst…
... ]The only way to get IM2 working in 16K reliably would ... ROM, which looks like #xxFF and which contains some reasonably convenient ... can also sync simply using HALT. But when I look at ... looking up HALT in one's Z80 thesaurus and actually figuring out ... -
Some thoughs about fast scrolling on 128 modelPlease, consider this article as technically interesting concept not a proven algorithm. ONE The fastest scrollers use long sequence of PUSH inst…
... ROM routine; I did and I continue using them, ... the use of ROM for IM2 also relies upon non- ... , all is fair in war and coding? :)
[QUOTE=Hikaru ... looking up HALT in one's Z80 thesaurus and actually figuring ... that I "invented" using halt in mid-1990s in the ... -
Is there an SNA halt bug?Hello all, I noticed that some SNAs don't work on my emulator but they do work in almost everyone else's, SPUD fails with them too which is a tad sp…
... these snaps work on Fuse and SpecEmu... :-) (Of course, ... ,X0121
ei
halt
X0121:
ld ... setting up an IM2 handler, enabling interrupts, and seeing if ... br /> push af ; R and interrupt mode
push ... -
Is there an SNA halt bug?Hello all, I noticed that some SNAs don't work on my emulator but they do work in almost everyone else's, SPUD fails with them too which is a tad sp…
... z,X0121
ei
halt
X0121:
ld ... setting up an IM2 handler, enabling interrupts, and seeing if the ...
push af ; R and interrupt mode
push ix ... my IFF1 and set it to zero and switched RETN ... -
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…
... use IM2 on a 16K - you have to rely on a HALT ... /> As for playing AY music and other things, you can simply ... -
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…
... use IM2 on a 16K - you have to rely on a HALT ... /> As for playing AY music and other things, you can simply ... about the later models freezing, and the IM1 can vary as ... -
z88dk and im2I set up a minimal IM2 mode so I can draw sprites for a laff [code] #include <string.h> #include <stdio.h> #include <im2.h> #include <stdlib.h> #in…
... : Ah, you probably had a HALT in there to sync with ... IM2 routine. I've never got it working otherwise.
2. HALT ... is a very good command to use for controlling speed and ... sync stuff.
3. An empty IM2 routine is ... -
Documentation for SP1 for Z88DK?(I was going to post in [URL="http://www.worldofspectrum.org/forums/showthread.php?t=11729"]the other thread[/URL], so if a mod thinks this should go…
... for a few seconds and then crashes, with graphical ... , sometime, attaches an im2 peripheral your program may ... logic and I dont see any flickering, so IM2 is ... , you can execute a 'halt' before an 'sp1_UpdateNow()' to ... some time in the 'halt' that could be used ... -
Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…
... interrupt using a loop and the sprites look just ... with $FF. Different fixes and pauses for each game. for ... here are patches for crux and stardragon (just load before ... a patch doesn't use im2 at all!!!!!!
halt the program until the ... -
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…
... will notice that some functions and headers have changed names.
#include // for z80_bpoke(), z80_wpoke(), im2 functions
#include // for memset ... background with some arbitrary patterns, and draw it.
...
