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The best portable machine for Spectrum emulation?Which is the best portable or handheld device for Spectrum and non-Spectrum emulation? I only have a PSP, and whilst it has some good emulators, the …
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15. Emulate the R-register, and anything else problematic?
The best portable machine for Spectrum emulation?Which is the best portable or handheld device for Spectrum and non-Spectrum emulation? I only have a PSP, and whilst it has some good emulators, the …
... =ewgf;256961]15. Emulate the R-register, and anything else problematic?[/QUOTE ...MB02+ software and system developmentsThe following text was (before last modification) first published here: [url]http://www.sintech-shop.com/forum/board.php?boardid=20[/url] As discuss…
... is to properly adjust the R register so that it contains the ...Multiplayer online Speccy gaming - an actual technical proposalAs is so often the way, [url=http://www.worldofspectrum.org/forums/showpost.php?p=274215&postcount=121]trying to put into words why something is impo…
... like "Frame n is x R register increments long" to work around ...The R RegisterI've found some documentation regarding the R register (in that it is updated every M cycle except for a certain number of opcodes in which it is upd…
... found some documentation regarding the R register (in that it is updated ... the maximum value of the R register is +127? If so, do ... /> By heart:
The R-register is used to refresh memorylocation ...The R RegisterI've found some documentation regarding the R register (in that it is updated every M cycle except for a certain number of opcodes in which it is upd…
Ignore Dr. Beep.
The low 7 bits of the R register act as a 7-bit counter. The high bit will stay set if you set it, and stay reset if you unset it.The R RegisterI've found some documentation regarding the R register (in that it is updated every M cycle except for a certain number of opcodes in which it is upd…
... low 7 bits of the R register act as a 7-bit ...The R RegisterI've found some documentation regarding the R register (in that it is updated every M cycle except for a certain number of opcodes in which it is upd…
... : "The highest bit of the R register is never changed: this is ...The R RegisterI've found some documentation regarding the R register (in that it is updated every M cycle except for a certain number of opcodes in which it is upd…
... did not correctly emulate the R register, although that's probably no ... Encounter. After start, game checked R register for set bit 7. As ... it sets bit 7 of R on some point.The R RegisterI've found some documentation regarding the R register (in that it is updated every M cycle except for a certain number of opcodes in which it is upd…
... Encounter. After start, game checked R register for set bit 7. As ... it sets bit 7 of R on some point.[/quote]
R was set and during the ...The R RegisterI've found some documentation regarding the R register (in that it is updated every M cycle except for a certain number of opcodes in which it is upd…
... code where the value of R was set and during the ... ]
Exact value of R register was examined by some protections ... it certainly changed value of R register, since much more instructions were ...The Speccy game you try first with a new emulatorI'm excited about the possibility of getting Speccy games up and running on the Nintendo Wii, which led me to think about which game I'd try first...…
I always test Sabre Wulf first.
You only have to go to screen 3 to determine if the R register is emulated correctly, because if it isn't the rhino will be stuck in the corner.The Speccy game you try first with a new emulatorI'm excited about the possibility of getting Speccy games up and running on the Nintendo Wii, which led me to think about which game I'd try first...…
... 3 to determine if the R register is emulated correctly, because if ...Unprotecting games without knowning m.c.DivIDE or MB02 users don't need unprotected games, but those who still use the Microdrive, Wafadrive, Timex FDD, +3, Plus D, Disciple or use the new …
... protection checks bit 7 of R register as well.
I ...The Speccy game you try first with a new emulatorI'm excited about the possibility of getting Speccy games up and running on the Nintendo Wii, which led me to think about which game I'd try first...…
... lose[/url]"?[/QUOTE]
R register or undocumented flag. Pfflrr...I ...Design Design / Crystal ComputingNice post on [URL="http://groups.google.com/group/comp.sys.sinclair/browse_thread/thread/56e6ebdedc6930ac#"]comp.sys.sinclair[/URL] about [URL="http:…
... and knew that the Z80 R register had a sticky top bit ... emulators didn't emulate the R register properly.
The piracy ...What game gobsmacked you the most?And where were you when you saw it for the first time? Mine has to be, an obvious choice, Knightlore & Underwurlde. We'd all seen the adverts at s…
... 's pain-in-the-arse, R-register-using, XOR-ing mess of ...A scrolling starfield - help needed!I have been messing on my speccy again recently and tried to do a scrolling (parallax - maybe) starfield. I know how to scroll using machine code but…
A combination of R register, Shift and Xor usually does the trick
LD HL,seed
LD B,(HL)
LD A,R
RLA
XOR B
LD (HL),A
something as simple as this may do the trick...or maybe not...Atic Atac speed.Dear all, Excuse the noob question, but does anyone know how fast Atic Atac runs at? What I mean is, frames per second, or the amount of pixels the…
[QUOTE=frobush;326995]
...it's all bollocks and messes with sound and stuff!!![/QUOTE]
Thanks for posting this code.
Oooh, Nice use of the high bit of the 'r' register! :DAtic Atac speed.Dear all, Excuse the noob question, but does anyone know how fast Atic Atac runs at? What I mean is, frames per second, or the amount of pixels the…
... of the 'r' register! :D[/QUOTE]
The *what*??? R register?
*googles it*
Holy crap! A register I ...Atic Atac speed.Dear all, Excuse the noob question, but does anyone know how fast Atic Atac runs at? What I mean is, frames per second, or the amount of pixels the…
[QUOTE=Arjun;327444]The *what*??? R register?
*googles it*
< ... br /> Holy crap! A register I've never heard about ...Atic Atac speed.Dear all, Excuse the noob question, but does anyone know how fast Atic Atac runs at? What I mean is, frames per second, or the amount of pixels the…
... 'r' register! :D[/QUOTE]
High bit of the R register? ... I thought the R register went up to ... /> [QUOTE=Arjun;327444]The *what*??? R register?
*googles it* ... a fixed value to the R register (e.g.
...Atic Atac speed.Dear all, Excuse the noob question, but does anyone know how fast Atic Atac runs at? What I mean is, frames per second, or the amount of pixels the…
... bit of the R register? I thought the R register went up to 127 ... set with a [b]ld r,a[/b] in which case ... [b]ld a,0x80 : ld r,a[/b] at one point ... , and [b]xor a : ld r,a[/b] somewhere else.Atic Atac speed.Dear all, Excuse the noob question, but does anyone know how fast Atic Atac runs at? What I mean is, frames per second, or the amount of pixels the…
Yes, bit 7 of the R register is used as an interrupt flag. And because LD A,R automatically sets the FLAG Register (you needn't test A at all) it's fast and ideal for sound loops.Couple of questions...Howdy, 1. Is there a decent way to get a random number in BASIC/MC? I've been using LET a=INT(RND*2)+1 but the numbers tend to stay at 1 or 2 most …
... would also ensure that the R register is randomised a bit.. I ...Couple of questions...Howdy, 1. Is there a decent way to get a random number in BASIC/MC? I've been using LET a=INT(RND*2)+1 but the numbers tend to stay at 1 or 2 most …
... would also ensure that the R register is randomised a bit.. I ...Couple of questions...Howdy, 1. Is there a decent way to get a random number in BASIC/MC? I've been using LET a=INT(RND*2)+1 but the numbers tend to stay at 1 or 2 most …
... would also ensure that the R register is randomised a bit.. I ...Couple of questions...Howdy, 1. Is there a decent way to get a random number in BASIC/MC? I've been using LET a=INT(RND*2)+1 but the numbers tend to stay at 1 or 2 most …
... would also ensure that the R register is randomised a bit.. I ...Hidden Features In GamesI'm sure there was a thread like this somewhere - sorry, but I can't find it. Hidden stuff in games. In "Mikie" there is a hidden bonus in each of …
... for emulator testing with the "R" register usage - if your emulator gets ...
