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Speccy 48k Earphone jack problemThis is odd, today I set up my rubber key as normal, headphone out of the tape player into the "ear" of the spectrum, started everything off but noth…
ive got this tape deck whapped up full bore, not even a flicker. Fire up the toastrack and everythings fine, it aint the volume thats the problem here. -
Speccy 48k Earphone jack problemThis is odd, today I set up my rubber key as normal, headphone out of the tape player into the "ear" of the spectrum, started everything off but noth…
... full bore, not even a flicker. Fire up the toastrack and ... -
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…
... wish to add NOP and HALT instructions, which are trivial as ... -
Flicker free ZX80 KongCool, more [URL="http://www.fruitcake.plus.com/Sinclair/ZX80/FlickerFree/ZX80_Kong.htm"]good stuff[/URL] from Paul Farrow [IMG]http://www.fruitcake.…
... /> I didn't know the flicker-free trick for ZX80 - I ... -
New game Sea Dragon (beta)Hi. Over at zx.pk.ru there is a lot of talk of a new game for spectrum called Sea Dragon. It is a VERY nice underwater side scroller... technically V…
I dont get any flicker in Spectaculator 48k emulation. Also ... -
SAM programmingHi Can anyone provide any example hello world or graphics/sprite printing style machine code routines for the SAM? I can't seem to find anything rem…
... your sync issues are causing flicker, you can probably fix them ... -
ZXDS 0.9.1 beta 1Hi! After way too much time, new [URL="http://zxds.raxoft.cz/"]ZXDS[/URL] version is available. Doesn't add much stunning features (although the dis…
... has recently released a couple flicker-free ZX80 games that cannot ... do it. :)
-Reduce Gigascreen Flicker (or emulation of CRT TV ... -
Help! Reverse engineering a Spectrum game[deleted]
... next video frame (see Z80 HALT)
04 - A set of ... -
New Isometric Game MK2A while back (October 2009) I started writing a new isometric game. [url]http://www.worldofspectrum.org/forums/showthread.php?t=27123[/url] Well, I…
Hurrah!
Written as a sequel to "The Great Escape".
But better. Much better.
I'm on my third version of scrolling routine. Trying to trade off between a little screen flicker and speed.... -
New Isometric Game MK2A while back (October 2009) I started writing a new isometric game. [url]http://www.worldofspectrum.org/forums/showthread.php?t=27123[/url] Well, I…
... off between a little screen flicker and speed....[/QUOTE]
A ... -
Help! Reverse engineering a Spectrum game[deleted]
... , and (3) is just a HALT instruction, and could be considered ... -
Help! Reverse engineering a Spectrum game[deleted]
... , and (3) is just a HALT instruction, and could be considered ... -
Help! Reverse engineering a Spectrum game[deleted]
... , and (3) is just a HALT instruction, and could be considered ... -
Help! Reverse engineering a Spectrum game[deleted]
... useful in tools...
HALT/Interrupt:
Vsync is ... not just throw in a halt to sync the frame whenever ... -
Help! Reverse engineering a Spectrum game[deleted]
... video frame (see Z80 HALT)
[B]HALT[/B]
04 ... -
The Programmers Development System (PDS)Hi everybody, I recall this system has been mentioned several times on WoS forums. Last time was, I think, when those sources from Maz Spork (Buggy …
... 't keep a steady 50hz flicker free frame rate on an ... -
How to Write ZX Spectrum Games As some of you may know, it has long been my intention to produce a document which explains pretty much everything I have learned - and am still lea…
... /> Chapter Twelve - Timing
The Halt Instruction
The Spectrum's ... -
Why do cars have gears?Seriously, as a non-driver I don't know why cars have gears. A mate of mine is buying a car and is thinking of getting an automatic, and he asked me …
... accelleration:
Floor it from halt, then quickly and shortly release ... -
Opinion on new 128K only gamesHello, Being new to the WOS community, I am unclear on the attitude towards 128K only software, that is; Is there a strong need to support the 48K m…
... read it just after a HALT instruction, as the ULA will ... -
ZX Spectrum+ Problem - Need help -Greetings guys, I bought one ZX Spectrum+. This is what displays on the TV: [IMG]http://d.imagehost.org/0371/17102010_001.jpg[/IMG] When I switch …
... ,MRQ,IORQ,WAIT,NMI BUSRQ,HALT,INT,CLK) if there is ... -
The Programmers Development System (PDS)Hi everybody, I recall this system has been mentioned several times on WoS forums. Last time was, I think, when those sources from Maz Spork (Buggy …
... br /> ; -------------------------------< HALT >----------------------------------
halt
clr.b flag ... br />
mycode
bsr halt
bsr clear_cram
bsr ... -
Worst gaming decisions ever?In a different thread, I mention what, to me, is probably the single greatest mistake in the history of computer/console games design ever. Here are …
Worst gaming decisions ever?In a different thread, I mention what, to me, is probably the single greatest mistake in the history of computer/console games design ever. Here are …
Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…
... [B]LDIR[/B] gmail [B]HALT[/B] com (substitute LDIR by ... @ and HALT by a dot, LOL!); when ...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 …
... example, it tells you HALT will halt the CPU until an interrupt ... occurs. (Thus HALT is useful for synchronizing to ...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 …
[QUOTE=Winston;486830] (Thus HALT is useful for synchronizing to ...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 …
... like this
[QUOTE]HALT:
The CPU executes NOPs ...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 …
... al. In a nutshell, the HALT will cause speccy to wait ... -states to draw a frame, HALT is used to synchronise with ...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 …
... the TV display. The 'HALT' instruction becomes a 'NOP' ... (disable interrupt) instruction, the 'HALT' command will never detect the ... your program once the 'HALT' instruction has found the ... CALL' instruction between the 'HALT' instruction and the next instruction ...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 …
Well I am now understanding HaLT, thank you all for your replies
special prize to ASM ... wow
ASH.
