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R Register, Contended RAM and ClonesHi. I've had a quick look at the CSS FAQ but didn't spot quite what I'm looking for (also the CSS FAQ doesn't have much detail of the clones - there …
... in the state of the R register with contended RAM (according to ... -
R Register, Contended RAM and ClonesHi. I've had a quick look at the CSS FAQ but didn't spot quite what I'm looking for (also the CSS FAQ doesn't have much detail of the clones - there …
... constant timing.
Reason why R reg's content changes is ... less instructions performed.
R register is actually simple 7-bit ... , CPU performs NOPs to maintain R registers 'counting'. If set bit ... 7 of R reg to 1, it will ... -
R Register, Contended RAM and ClonesHi. I've had a quick look at the CSS FAQ but didn't spot quite what I'm looking for (also the CSS FAQ doesn't have much detail of the clones - there …
... guess the HALT increments the R-register for each NOP it executes ... -
R Register, Contended RAM and ClonesHi. I've had a quick look at the CSS FAQ but didn't spot quite what I'm looking for (also the CSS FAQ doesn't have much detail of the clones - there …
... 's causing the difference in R-register because of the contended RAM ... model. The HALT increments the R-register for each NOP that it ... a HALT would increment the R-register once only, which is wrong ... -
R Register, Contended RAM and ClonesHi. I've had a quick look at the CSS FAQ but didn't spot quite what I'm looking for (also the CSS FAQ doesn't have much detail of the clones - there …
Yeah, it does make more sense when you think of it like that. I've never needed to before as it's only now that I am really using the R-register.
Randomness in demos can be dangerous :) -
The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…
Though think of the I register in the $40-$7f range, the R register and memory refresh cycles :)
This is only my first attempt at controlling an effect that's been known about for years! -
RealXThis may be a dumb question but will RealX ever get released?
... values of the I register and the R Register, combined to form an ... address with R occupying the low ... happens because when the I register falls in the range 0x40 ... address
A7-A0 = the R register of the Z80
[/quote ... -
How to speed up TZX loading (emu development)With many newer emulators there are options to do faster loading schemes, even for turbo-loader or protected loader blocks in TZX files. For example,…
... :p[/quote]
The R register would also be a good ... -
Network cableSorry for almost flaming with all my... er.... two questions now...! ;) I read in the Microdrive 1 manual about network but I cannot find out what k…
... the software resolves using the 'R' register to provide a random number ... -
Network cableSorry for almost flaming with all my... er.... two questions now...! ;) I read in the Microdrive 1 manual about network but I cannot find out what k…
... the software resolves using the 'R' register to provide a random number ... -
Cybernoid editorSo, my long tern goal is to make my own Cybernoid or Rex like game (see an ancient thread about Sprite advice)...but my skills are somewhat lacking..…
[QUOTE=Mr. Anonymous;175887][url=http://download.yousendit.com/A377C88A6C2139ED]>>>Demo -
toasted soeccysHello, ive jsut bought a pair of speccys on ebay (one 16k issue 2 & a prob 48k issue 3) unfortunaly the genius who sold them tried to see if the wor…
... check the Z80's R register. The Z80's R register will function in ... -
k7zx, a utility to load programs to Spectrum at very high speedk7zx is a windows program that convert .tap, .tzx , .sna and .z80 files to a wav file that can be played to a real Spectrum. You can down load it f…
... very clever use of the R register to control timing but I ... chose to WRITE to the R register also. You are a v ... -
Question about snapshot files....I've noticed that everytime I play "The Boss" (football management) it produces the same scores. I've played the first 5 games 3 or 4 times now and t…
... also try to use the R register to generate a seed. This ... deterministic as the value of R depends on the number of ... -
New protection systemsAs a follow-up to [URL="http://www.worldofspectrum.org/forums/showthread.php?t=14311&page=2"]this[/URL] thread regarding relatively new protection sy…
... few undocummented Z80 features and R register, if I remember correctly, nothing ... -
New protection systemsAs a follow-up to [URL="http://www.worldofspectrum.org/forums/showthread.php?t=14311&page=2"]this[/URL] thread regarding relatively new protection sy…
... with?)
2) use the R register to decode the data as ... -
New protection systemsAs a follow-up to [URL="http://www.worldofspectrum.org/forums/showthread.php?t=14311&page=2"]this[/URL] thread regarding relatively new protection sy…
... /> [quote]
2) use the R register to decode the data as ... -
New protection systemsAs a follow-up to [URL="http://www.worldofspectrum.org/forums/showthread.php?t=14311&page=2"]this[/URL] thread regarding relatively new protection sy…
... it impossible to use the R register to encode/decode data on ... saving the file doing the R register stuff, would that be better ... -
New protection systemsAs a follow-up to [URL="http://www.worldofspectrum.org/forums/showthread.php?t=14311&page=2"]this[/URL] thread regarding relatively new protection sy…
The slightest variation in tape motor speed would push the value of the R register some way out from the value it held during the saving of that same pulse. -
New protection systemsAs a follow-up to [URL="http://www.worldofspectrum.org/forums/showthread.php?t=14311&page=2"]this[/URL] thread regarding relatively new protection sy…
... push the value of the R register some way out from the ... />
Decrypters can use the R register to decode the already loaded ... -
New protection systemsAs a follow-up to [URL="http://www.worldofspectrum.org/forums/showthread.php?t=14311&page=2"]this[/URL] thread regarding relatively new protection sy…
... of forgetting to correct the R register so it made lots of ... -
New protection systemsAs a follow-up to [URL="http://www.worldofspectrum.org/forums/showthread.php?t=14311&page=2"]this[/URL] thread regarding relatively new protection sy…
... of forgetting to correct the R register so it made lots of ... as it would affect the R register. Edit: Oh, I see, that ... -
New protection systemsAs a follow-up to [URL="http://www.worldofspectrum.org/forums/showthread.php?t=14311&page=2"]this[/URL] thread regarding relatively new protection sy…
[quote=BloodBaz;187144]Decrypters can use the R register to decode the already loaded data as the clock cycle whilst processing instructions is will defined (assuming interrupts are disabled of course)[/quote]
Ah right, that's pretty cool! :) -
New protection systemsAs a follow-up to [URL="http://www.worldofspectrum.org/forums/showthread.php?t=14311&page=2"]this[/URL] thread regarding relatively new protection sy…
... as it would affect the R register. Edit: Oh, I see, that ... sloppy and forgot that the R register would be totally wrong if ... -
the lost years...hello what i am refering to in the title is the years 1993-1997 when the ZX spectrum was dormant.i know that WOS was set up in 1995,but i am guessin…
... because it depended on correct R-register behaviour or something was a ... -
Beautifully programmed gamesJust watching the bobby bearing tzx and admiring the beautiful programming involved. Which other games would you say had asthetic programming opposed…
... understand the whole thing with R register in WaitVBlank and beeper routines ... -
New protection systemsAs a follow-up to [URL="http://www.worldofspectrum.org/forums/showthread.php?t=14311&page=2"]this[/URL] thread regarding relatively new protection sy…
... as it would affect the R register. Edit: Oh, I see, that ... (or LDDR) coupled with the R register didn't cause any real ... calculator get the val or R entering the LDIr then val ... -
Emulation vs SpecApologies if this is an old thread, what does anyone think is the best - playing spectrum games through emulation or on a real speccy? I feel it's b…
... instruction timings, deal with the R-register properly and assorted other niceties ... -
Emulation vs SpecApologies if this is an old thread, what does anyone think is the best - playing spectrum games through emulation or on a real speccy? I feel it's b…
... instruction timings, deal with the R-register properly and assorted other niceties ... -
Beautifully programmed gamesJust watching the bobby bearing tzx and admiring the beautiful programming involved. Which other games would you say had asthetic programming opposed…
... /> Oh, and Fikee, about the 'R' register in the 'sound routines' / 'wait ... /> Bit 7 of the refresh 'R' register is used as an interrupt ... use bit 7 of the 'R' register because you can test for ... /> ld a,r ; put the contents of the refresh register into the ...
