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Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …
... suppose that we must use HALT that goes the game solwest ... -
Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …
... . Then make your main routine HALT and wait for it. Now ... -
Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …
Wow!!! I did not idea about it. Itś very interesting the world of the tv refresh. I only knew about putting a HALT!!! Iĺl try to understand it, but I think that it?d too much for me... Very very thanks. I like very much hearing abut this!!!!! -
Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …
... no wasted cycles in a HALT, eg, waiting to synchronize screen ... -
Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …
... no wasted cycles in a HALT, eg, waiting to synchronize screen ... -
Fairlight's use of LDIRYS, comparing Fairlight and Nightshade, said: [quote]Fairlight is much more interesting even though the techniques that Bo Jangeborg uses for screen…
... fairly crude test after a HALT, subtracting the time for the ... -
Screenshots in magazinesAlways meant to ask, how did the magazines get those perfect screenshots on their pages? Does anyone know if any special software was involved or may…
The Spanish magazine Micro-Hobby first used a camera set up, but later on they used a modified ZX Spectrum which could halt the game and send the screenshot to a printer. -
Screenshots in magazinesAlways meant to ask, how did the magazines get those perfect screenshots on their pages? Does anyone know if any special software was involved or may…
... modified ZX Spectrum which could halt the game and send the ... -
How to safely maximise available memoryHi All, I'm toying with an idea that will require I have as much memory available as possible. I'm a little embarrassed I have to ask this tbh. As…
... you do disable interrupts, the HALT command will hang forever. You ... 'RET') cut in before the HALT will continue. It won't ... -
SOPA good or bad?I see the [url=http://www.raspberrypi.org/]Raspberry Pi[/url] stie is going dark in protest on against SOPA on the 18th Jan. Is it worth going dark …
Now I'm getting that SOPA screen. Seems like it's only every other search I do where it pops up with it but you can halt it if you press ESC (chrome) immediately after loading a page (but it has to be a split-second before they redirect you). -
How to safely maximise available memoryHi All, I'm toying with an idea that will require I have as much memory available as possible. I'm a little embarrassed I have to ask this tbh. As…
... , though I found out about halt and di the hard way ... -
Faster CLS...Hi Folks, Looking at the CLS command in the Spectrum ROM disassembly it seems rather complex. Does anyone know of a simpler/quicker routine that wi…
Ah, should the line [B]LD D,1[/B] have been [B]LD D,L[/B]?
Noticed there is no $ in front of the 1.
May be not as there does not seem to be an [B]LD D,L[/B] opcode. :-(
Paddy -
8080 opcode question ?Never mind I think I have worked it out
I just looked up the opcode, then translated it to Z80. At which point I knew what it was doing. :-) -
Which Speccy game had best border effectsIn truth, I'm just trying to remember a game from my youth, and the amazing border effect during pause is the only thing I can clearly recall about i…
... if you can use a HALT to wait for it.
HALT, that works like a lot ... -
Would anyone be interested in......Hi, I'm wondering if there would be much interest in an expansion card for the speccy that gives a VGA output with enhanced gfx & sound capabilities…
... of intercepting the RST $28 opcode for example, to intercept calls ... -
Would anyone be interested in......Hi, I'm wondering if there would be much interest in an expansion card for the speccy that gives a VGA output with enhanced gfx & sound capabilities…
... of intercepting the RST $28 opcode for example, to intercept calls ... -
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…
... you can then use the HALT command in your main program ... -
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…
Cheers. I haven't used HALT either because I didn't ... -
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 main loop going ei-halt-di. A naff solution but ... -
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…
... means you can just use HALT at the end of your ... -
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…
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An useful instruction is HALT - it makes that processor to ... />
The simplest use of HALT when you don't have ... is:
A) Execute HALT which makes Spectrum start to ... -
IF....AND......THEN statementsSorry...more questions Now initially I thought this should work....but now thinking about it it is doomed to fail as if the player's x co ordinate a…
... rotate those bits? Why this opcode is there, where will I ... -
IF....AND......THEN statementsSorry...more questions Now initially I thought this should work....but now thinking about it it is doomed to fail as if the player's x co ordinate a…
... rotate those bits? Why this opcode is there, where will I ... -
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…
... bit of experimentation with using HALT etc. then. -
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…
... a bash at putting a halt in your mainloop instead of ... -
Authored with ZXodus EngineIMHO the [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0026639"]ZXodus Engine[/URL] entry should have a list like "The following games are k…
... - try to get into a HALT instruction to wait for the ... -
Authored with ZXodus EngineIMHO the [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0026639"]ZXodus Engine[/URL] entry should have a list like "The following games are k…
... game, I was using a halt & the developers even graciously ... -
Quick OpCode Q...Leet emulat0r makerz.... I've seen two versions for this set of OpCodes, obviously they are undocumented.... FDCB d 40 BIT 0,(IY+d) (From Seans z80…
... you are right, the first OpCode is correct in this case ... )[/CODE]
However the OpCode for all other operations (except ...
