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He's back......and he's got a new trick! AY Chip here. I've been away far too long. I would like to announce 'HatStand': for no adequately explored reason, I h…
... IFF, the correct number of cycles to jump to the start ... -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... know we have about 14000 cycles before the TV raster begins ... the screen and thereafter 224 cycles per each pixel row. Since ... 14000 + 20*8*224 = 49840 cycles to complete the scroll after ... -
Z80 CPUs goin cheap.This guy is selling them very cheaply and has a couple multi item auctions for them. Thought I would post here in case people were looking for one/so…
... , posssibly - could make the timing cycles go much faster and burn ... -
How many levels does Chuckie Egg have?I've always believed it to be 256 before the game repeats itself. There are phases of 8 levels, but with variations between each phase. I'm pretty …
... loops continuously in 8-level cycles. The amount of nasties in ... the level decreases during subsequent cycles until it reaches 400 at ... -
CNN's Larry King Live NAFTA single currencyBye bye dollar ! [url]http://www.prisonplanet.com/articles/october2007/091007_fox_admits.htm[/url] Just as a matter of time ;) And naturally the fi…
... all. And Canada's economic cycles do not act in phase ... -
MULTITECH pictures[url]http://velesoft.speccy.cz/data-gear.htm[/url]
... of contention, but with 7 cycles out of 8 contended whereas ... -
MULTITECH pictures[url]http://velesoft.speccy.cz/data-gear.htm[/url]
... of contention, but with 7 cycles out of 8 contended whereas ... -
New Game: BeTiled! by CEZGSIt's out: [url]http://cezgs.computeremuzone.com/eng/card.php?id=19[/url]
... no other ZX has enough cycles to get the intro going ... -
Input/Output on Edge ConnectorI would like to sense a pulse on the data bus via the edge connector, i.e. on or off. How do you decide what port it is on? I would also like to send…
... persists for a few clock cycles.
Then IORQ goes ... -
Input/Output on Edge ConnectorI would like to sense a pulse on the data bus via the edge connector, i.e. on or off. How do you decide what port it is on? I would also like to send…
... more about the Z80 IORQ cycles, you need to read this ... 18 (see 'Input or Output cycles') -
50Hz on PC?Hi, do you know of any emulator for PC that can switch monitor refresh rate to 50Hz or closest possible and sync ZX interrupt with monitor refresh?…
... about code that counts CPU cycles for high precision, but still ... -
50Hz on PC?Hi, do you know of any emulator for PC that can switch monitor refresh rate to 50Hz or closest possible and sync ZX interrupt with monitor refresh?…
... about code that counts CPU cycles for high precision, but still ... -
50Hz on PC?Hi, do you know of any emulator for PC that can switch monitor refresh rate to 50Hz or closest possible and sync ZX interrupt with monitor refresh?…
What about timing the delay and stick in wait cycles in the audio loop to compensate? -
50Hz on PC?Hi, do you know of any emulator for PC that can switch monitor refresh rate to 50Hz or closest possible and sync ZX interrupt with monitor refresh?…
... delay and stick in wait cycles in the audio loop to ... -
ULA RAS, CAS cycles, refresh and "snow effect"Hello everyone. I have a question, does anyone observed timings of RAS and CAS generated from ULA? I think there may be answer to where the "snow ef…
... there are no special refresh cycles for 16k part of RAM ... -
ULA RAS, CAS cycles, refresh and "snow effect"Hello everyone. I have a question, does anyone observed timings of RAS and CAS generated from ULA? I think there may be answer to where the "snow ef…
... are no any additional refresh cycles (or there is no need ... ) for 192*224 = 43008 z80 cycles in a frame. That leaves ... about 70000 - 43008 = 26992 z80 cycles = 7.7ms when no display ... misunderstood you... "no additional refresh cycles" while the ula draw the ... -
ULA RAS, CAS cycles, refresh and "snow effect"Hello everyone. I have a question, does anyone observed timings of RAS and CAS generated from ULA? I think there may be answer to where the "snow ef…
... there are no special refresh cycles for 16k part of RAM ... -
ULA RAS, CAS cycles, refresh and "snow effect"Hello everyone. I have a question, does anyone observed timings of RAS and CAS generated from ULA? I think there may be answer to where the "snow ef…
... /INT pulse is about 30 cycles which was unknown at one ... -
ULA RAS, CAS cycles, refresh and "snow effect"Hello everyone. I have a question, does anyone observed timings of RAS and CAS generated from ULA? I think there may be answer to where the "snow ef…
... /INT pulse is about 30 cycles which was unknown at one ... -
How does the Z80 work internaly?How does the Z80 work internaly, i.e. how does it actually execute a machine code instruction? When it fetches a byte from the memory and finds, for…
... of the next few clock cycles
- the register store, which ... -
Benchmark timeWell, the BASIC benchmark posted in Creative Computing back in the 80s came up as a topic on the AtariAge forums. The article is available online an…
... 6/4000*1.79e6 = 2685 cycles per operation (I assume this ... clock). With at least 2 cycles per instruction this is a ... -
Benchmark timeWell, the BASIC benchmark posted in Creative Computing back in the 80s came up as a topic on the AtariAge forums. The article is available online an…
... 6/4000*1.79e6 = 2685 cycles per operation (I assume this ... clock). With at least 2 cycles per instruction this is a ... at double speed and splits cycles between the CPU and video ... -
Benchmark timeWell, the BASIC benchmark posted in Creative Computing back in the 80s came up as a topic on the AtariAge forums. The article is available online an…
... at double speed and splits cycles between the CPU and video ... instructions to multiples of 4 cycles *all the time* in order ... -
another c64 vs. Speccy site...[url]http://c64vsspectrum.com/[/url] 25 years and we are still brawling.. ;)
... for the screen memory nick cycles off the processor. It's ... -
another c64 vs. Speccy site...[url]http://c64vsspectrum.com/[/url] 25 years and we are still brawling.. ;)
... is only a few CPU cycles.
The BBC Micro ... -
A serious question (in case you think it's facetious)Alright, so none of us can tell the future, and equally no one knows for definate what oil/gas etc reserves are left and where, but I was talking to …
... who have studied the suns cycles for years?...or geologist that ... -
A serious question (in case you think it's facetious)Alright, so none of us can tell the future, and equally no one knows for definate what oil/gas etc reserves are left and where, but I was talking to …
... who have studied the suns cycles for years?...or geologist that ... -
A serious question (in case you think it's facetious)Alright, so none of us can tell the future, and equally no one knows for definate what oil/gas etc reserves are left and where, but I was talking to …
... who have studied the suns cycles for years?...or geologist that ... -
MULTITECH pictures[url]http://velesoft.speccy.cz/data-gear.htm[/url]
... . This will clearly cost some cycles, but it doesn't eat ... -
help sought with first foray into machine code - pixel scrolldownI have started to code my first machine code program, a simple roadrace game. I've based it around the pixel scrolldown routine in 40 Best Machine Co…
... takes at minimum 10.5 cycles per byte. This means ... 6144*10.5 = 64512 cycles at minimum or less than ... which can function at 16 cycles per byte or 16*6144 ... = 98304 cycles for a full screen (1 ... hope for using ldi (16 cycles per byte).
...