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IM 2 interrupts and smooth scrolling - easy peasy!Okay, been fiddling around with IM 2 and have actually mastered (I think) how to use IM 2! Now I run my game Ragnar Revival in IM2 and use HALT to sy…
... game Ragnar Revival in IM2 and use HALT to sync screen ... drawing (dumping of offscreen graphics that is) and ... (a scrolling text) using HALT, and one without IM2 and HALT.
... 1 ;switch to IM 1 and enable
ei ;interrupts ... -
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…
... to get stuck on the halt instruction. I can't find ... bug with regard to SNA and halt, does anyone have the details ... -
type in to learn about IM2I'm trying to mess around with learning about IM2 and I found a nice little article in Sinclair User September 1988, issue 78, Page 70-71 [url="https…
... mess around with learning about IM2 and I found a nice little ... sort of bug in it and I haven't been able ... on what is going wrong and how to fix it.
Announce: BASin r14b availableHere's the fix mentioned earlier for those of you that either are too lazy to update your OS (XP SP2 has been out aaaaages, Arjun!) or even junk that…
... IM2 it won't use a single byte. (It will try and ... my code, the green border and HALT+DI usually means something has ...FUSE serial communication sample anyone?Hi, in [URL="http://manpages.ubuntu.com/manpages/precise/man1/fuse.1.html"]FUSE man pages[/URL] one finds switches for serial comms. By using --inte…
... I can run in IM2 to transfer data at ... byte command). RST nn and HALT. While RST would work ... in ROM, HALT would prevent debugging IM2 dependent code but ... RAM debugging stub using HALT to see if gdb ... stub to use HALT command for breakpoint and rewiring serial ...FUSE serial communication sample anyone?Hi, in [URL="http://manpages.ubuntu.com/manpages/precise/man1/fuse.1.html"]FUSE man pages[/URL] one finds switches for serial comms. By using --inte…
... I can run in IM2 to transfer data at ... byte command). RST nn and HALT. While RST would work ... in ROM, HALT would prevent debugging IM2 dependent code but ... to use HALT command for breakpoint and rewiring serial ... another instruction (such as HALT) as there is for ...Yet another TR-DOS questionI have yet another TR-DOS problem. I am using "LD C, command; CALL #3D13" to call the system functions. The problem is that TR-DOS automatically enab…
... /> I can't switch to IM2 and vector the interrupt to something ... 't seem to work in IM2 !
Does anyone have ...Sprites flickeringI am trying to write a Spectrum game in machine code. I am still a beginner in programming, however I did much progress recently, i believe. Now I am…
... do with screen refeshing, interrupts and HALT command, but I still dont ... explain why flicker happens
and how to avoid it?[NO NAME PROJECT] contributionhi to all. im writting new-super-mega game. it will be finished this century. :) so what is going on ? in the game (an arcade adventure) player can …
... can find some disk and when he reach a ... will run
with IM2 and it will take about half ... stack
-AY and speaker are available, but this ... will be offered
and touching ports directly will be ... saved on start
and reloaded at exit
...FMV on +3eOK, so about 6 months ago i posted here that i got full motion video on +3e, with a bunch of scr files called passion. I added the glider rider music…
... ran the whole thing in im2 and i thought it was fairly ... Marley - Three Little Birds and the incredibly weird, exciting Aphex ... those IM2 streaming loaders on the TRDOS demos, Icabod, and anyone ... toes, andrew barker and preservation team and everone else i forgot ...Key repeat weirdness with EI & IYI finally (after 35 years!) decided to write something a) for 48k speccy b) in z80 assembler. It's been over 20 years since I've written anything in …
... using pasmo as the assembler and zxspin as emulator. Basically what ... do DI, everything works perfectly and "wrong pixels" don't ... to wait for vertical retrace. And HALT does not seem to work ... wait for vertical retrace without HALT & EI?
< ...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…
... 's 19 cycles to acknowledge IM2 and jump to 0x100*I + , then ... 4 for the EI and 8 for the RETI = at ...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…
... 's 19 cycles to acknowledge IM2 and jump to 0x100*I + , then ... 4 for the EI and 8 for the RETI = at ... ]
Right you are. And as in many things Sinclair ... probably had all there marbles and were aware of the shortest ...Sparky eZX-BASIC Project in need of FPGA ExpertYou probably are not familiar with this project, but it is a computer system based on Zilog's new eZ80 chip and the OS is a superset of ZX BASIC. Ju…
... faster than a 1MHz Z80 and four times faster than ... DMA controller, Ethernet, matrix math, and 16 megabytes of linear addressable ... IRQ structure is more like IM2 and IRQ routines are completely ... can work that fast). Text and text programs work fine, ...Brand new River Raid remake?one of my friend is trying to make a riverraid remake on flash just to have fun, I checked zx spectrum port of river raid. it is bad, really bad, jer…
... write renderer, hang it on im2 and write game which runs on ...conversion of tape game to other formatHi All I've read many of the posts on this subject but I'm a bit stumped. I've recorded a WAV file from a taped spectrum program using Audacity - so…
... sites but neither load properly and halt at the same point showing ...Memory concerns with z88dkI've retaken my old spectrum project and sadly I've reached a dead end very fast. I'll try to explain my worst problem in a few lines. I'm not a vet…
... defined and will load SP appropriately). The location of the IM2 vector ... I register appropriately and places the z80 in im2 mode. Next we ... the z80 will be in im2 and calling my_isr() every 1/50s ... :interrupts"]im2 lib[/URL] contains more info on this and also ...designing a computerHi everyone! I am designing a 4 bit computer and i need some advice, is this a good instruction set? [CODE] BINARY OPCODE DESCRIPTION 00000 nop…
...
INC - Increment a register and continue to the next instruction ... might wish to add NOP and HALT instructions, which are trivial ... computable problem given enough time and storage.
... both easy to implement and offer optimizations to typical ...Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…
... it's time to continue and do my best to relaunch ... asap. If anyone feels capable and interested on assisting me to ... ] gmail [B]HALT[/B] com (substitute LDIR by @ and HALT by a dot ...A Pointless Propotional Font demoSomething I've made the last couple of days, which is probably completely pointless, but might be a bit amusing. It's also not worthy of posting thi…
... .
About the images and extra stuff, I was thinking ... of going rambo and directly hijack the bytecode interpreter ... very easily: just change to IM2 and place a call to a ... player 'cause it's small and tight and fast.
Doing ...A Pointless Propotional Font demoSomething I've made the last couple of days, which is probably completely pointless, but might be a bit amusing. It's also not worthy of posting thi…
... proportional routine deserves something special. And it's fun. :)
and directly hijack the ... the GAC file and the graphics and music in 128k ... easily: just change to IM2 and place a call to ... it's small and tight and fast.[/QUOTE]Do note ...Help Wanted: Playtest BUGFIXED games!There's an ongoing effort at WoS to fix classic Spectrum games with serious bugs that make them impossible to complete, crash frequently, etc. More d…
... /> In the original release for IM2 table I=#39 ; not work ... />
I corrected vector for IM2 and crash helicopterHelp Wanted: Playtest BUGFIXED games!There's an ongoing effort at WoS to fix classic Spectrum games with serious bugs that make them impossible to complete, crash frequently, etc. More d…
... In the original release for IM2 table I=#39 ; not ...
I corrected vector for IM2 and crash helicopter[/QUOTE]
and Mr. Anonymous because your original ... updated "known errors" description and BUGFIX file can be found ...RAND USR that doesn't work in emulators and clonesEons ago, I "discovered" a strange RANDOMIZE USR. This is it: [b]RANDOMIZE USR 46578[/b] Using it on a genuine ZX Spectrum rubber key or Plus model,…
... PUSH DE, isn't the HALT instruction spread over two M ... cycles so that in reality /HALT is only asserted in T2 ... checked it on real hardware and /HALT goes low just after the ... the clock in T4 of HALT's M1 cycle.
