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Slow BrowsersI'm getting fed up with web browsers. I've been jumping from Firefox, to Chrome, then back to Firefox and even to Internet Explorer but still am expe…
... PC was grinding to a halt and I found out it ... -
Slow BrowsersI'm getting fed up with web browsers. I've been jumping from Firefox, to Chrome, then back to Firefox and even to Internet Explorer but still am expe…
... PC was grinding to a halt and I found out it ... -
Horace you smooth mover!Just wondered, was Horace the first character to move smoothly around the screen - rather than in a blocky, character space by character space fashio…
... but with use of the HALT statement you can control both ... -
Feature comparison chart for Spectrum emulators? (And general EMU suggestion)Is there a chart or table which summarizes the main features of known Spectrum emulators? I think this would be very useful to have. In my case I am…
... that synch once with a HALT then run over three of ... -
Specbas new game PacmanWell I have been beavering away at this for a bit and I am now happy with it. (nearly) it's not bad (even if I say so myself) [img]http://i699.phot…
... interrupt, so just insert a HALT in the right place :p ... -
Help for beginner with z80Hi chaps, I'm reasonably new with z80, but had a fair amount of experience with 68000, so decided to give a few things a go. One little thing I'm t…
HALT: Why always 4ts?Instruction breakdown of halt is like that: PC 4ts. That means it fetches instruction byte from ram which tooks 4 ts and then does nothing and read…
... previous value so the same HALT instruction is read and executed ...HALT: Why always 4ts?Instruction breakdown of halt is like that: PC 4ts. That means it fetches instruction byte from ram which tooks 4 ts and then does nothing and read…
[URL="http://www.z80.info/z80syntx.htm#HALT"]I beg to disagree,[/URL] sir :)
BHALT: Why always 4ts?Instruction breakdown of halt is like that: PC 4ts. That means it fetches instruction byte from ram which tooks 4 ts and then does nothing and read…
... fetch instructions while in the HALT state? (that is: repeated ... fetched repeatedly, is that the "HALT" opcode's location (PC ... unchanged from when the HALT opcode was first fetched), or ... next one (instruction after the HALT) ?
Any questions? : ...HALT: Why always 4ts?Instruction breakdown of halt is like that: PC 4ts. That means it fetches instruction byte from ram which tooks 4 ts and then does nothing and read…
... fetch instructions while in the HALT state? (that is: repeated memory ...HALT: Why always 4ts?Instruction breakdown of halt is like that: PC 4ts. That means it fetches instruction byte from ram which tooks 4 ts and then does nothing and read…
... fetch instructions while in the HALT state? (that is: repeated ... br />
After executing the HALT instruction the Z80 keeps doing ... it stays at address HALT+1 until halt is exited.
< ... fetched repeatedly, is that the "HALT" opcode's location (PC ...HALT: Why always 4ts?Instruction breakdown of halt is like that: PC 4ts. That means it fetches instruction byte from ram which tooks 4 ts and then does nothing and read…
... fetch instructions while in the HALT state? (that is: repeated memory ... fetching the instruction following the HALT, but discards it.
ZX Spectrum (pre-128K) Edge ConnectorCan anyone point me in the direction to a decent diagram of the ZX Spectrum (pre-128K) Edge Connector. I can't believe I've been searching for nearl…
... D5 D3 D4 INT NMI HALT MREQ IOREQ RD WR -5V ...HALT: Why always 4ts?Instruction breakdown of halt is like that: PC 4ts. That means it fetches instruction byte from ram which tooks 4 ts and then does nothing and read…
... fetched repeatedly, is that the "HALT" opcode's location (PC unchanged ... from when the HALT opcode was first fetched), or ... next one (instruction after the HALT) ?[/QUOTE]
I guess ...HALT: Why always 4ts?Instruction breakdown of halt is like that: PC 4ts. That means it fetches instruction byte from ram which tooks 4 ts and then does nothing and read…
... should say that Spectaculator handles HALT correctly, and there is a ...HALT: Why always 4ts?Instruction breakdown of halt is like that: PC 4ts. That means it fetches instruction byte from ram which tooks 4 ts and then does nothing and read…
... should say that Spectaculator handles HALT correctly, and there is a ... into an emulator than models HALT correctly). Future versions of Fuse ...ZX Spectrum issue 6a - yellow border problem<p>Hello!</p><p>I have problem with my Sinclair ZX Spectrum issue 6A, 48K. </p><p>I have changed low memory (all 4116 IC's) and coil, all electrolyti…
... high (pins 25 and 23) /HALT is high (pin 18)then ...Win 10 or not to Win 10, that is the question.So Win 10 is going to be free.
... like a mechanism to temporarily halt background processes and give the ...TV Pal, odd and even framesI have been researching, but haven't found any real interesting information on this subject, so far. What I mean is, since TV PAL signal is interl…
... even have to wait for HALT twice, as long as you ... two frames, using a single HALT. But It will produce some ...Buddy 0.1 demo[url="http://wischner.co.uk/downloads/app.tap"]The tape is here[/url]. Load it, then enable kempston mouse emulation, then reload it. [url="https://g…
... way is detect mouse after HALT, read all three mouse ports ...External Z80 CPUHi Looking for some advice if possible. Many years ago I had a plug-in board for a Spectrum 48k which had a couple of switches, a z80 CPU, and a S…
... connect /BUSREQ, /BUSACK, /NMI, and /HALT on the external CPU to ...Spectrum Music and/or SFX needed for New GameI decided to participate in the ZX-DEV-2015 game contest. http://zx-dev-2015.proboards.com/board/10/general-compo-informaci-sobre-concurso Here i…
... item to run just after HALT instructions, i.e. just after ...z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…
... labeled "loop"
delay0 halt ??
wait for interrupt
delay0
halt ; wait for an interrupt.
z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…
... end the loop.
'halt' waits for a system interrupt ...z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…
... .
[code]delay0
halt ; wait for an interrupt.
delay0
halt ; wait for an interrupt.
z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…
... .
[code]delay0
halt ; wait for an interrupt.
HALT waits for an interrupt, which ... . So ten times through a halt means a delay of 10 ...External Z80 CPUHi Looking for some advice if possible. Many years ago I had a plug-in board for a Spectrum 48k which had a couple of switches, a z80 CPU, and a S…
... to 0V, and left /NMI, /HALT and /BUSACK not connected. On ... 5V via 10k and left /HALT and /BUSAK not connected. Every ...
