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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 …
... the progress of the R register. At one point I ... between the reads of R is pretty much static ... contended RAM on the R-register? I do not run ... no effect as the R-register is internal to the ... , Scorpion, ...) affect the R-register differently? Again I would guess ... -
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 ... -
Canny use of the 'r' register?Seeing Sokurah's code in the [URL="http://www.worldofspectrum.org/forums/showthread.php?p=583188#post583188"]crunch sound thread[/URL] has made me th…
... made me think about the r register.
I've used ... eg:
ld a,r
cp n
jp ... any crafty uses for the r register? -
R registerI'm cross-posting this as a spin-off of a [url="http://www.worldofspectrum.org/forums/discussion/52748/zx-spectrum-cartridges/p2"]thread in "Hardware…
... support & correctness of the R register behaviour.
... br /> [quote]Memory Refresh (R) Register.
The Z80 ... /> NOTE: Reset also sets R register to zero, hence also changes ... instruction fetch. Hence R register can be considered a ... -
How does interrupts work?I am a little confused regarding the interrupts on the Spectrum. If I have some hundred bytes of machine code started with, say, [B]RANDOMIZE USR 300…
... Smith (Green Beret, Cobra, etc) uses the R register to count cycles past ... -
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 …
... claim to have written the Cobra scroll - Mr Owens the other ... for emulator testing with the "R" register usage - if your emulator gets ... -
Fuse: what do you want to see?An open brainstorm. If you had a team of programmers working on [url=http://fuse-emulator.sf.net/]Fuse[/url], what would you tell them to work on? …
... my scores on Manic Miner, Cobra, Chuckie Egg, etc, and it ... imagine they would use the R register, which is changing so quickly ... -
ANN: Spectaculator 5.1Spectaculator is a Sinclair ZX Spectrum emulator for PCs running Windows 95, 98, ME, NT 4, 2000 and XP. Spectaculator emulates the 16K/48K/128K/+2/+…
Spectaculator is a Sinclair ZX Spectrum emulator for PCs running Windows
95, 98, ME, NT 4, 2000 and XP.
Spectaculator emulates the 16K/48K/128K/+2/+2A/+3 Spectrums and plenty of
additional hardware.
Spectaculator is ... -
Another Z80 processor questionOK, this time this isn't clearly covered in the FAQ, as far as I can see.... Suppose we have the CB instruction "SET b,r" (b=bit, r=register (differ…
... CB instruction "SET b,r" (b=bit, r=register (different from (hl)))... If ... the result to the initial register r.
My question is ... -
ULA bug and snowI am tryng to improve the snow emulation in FBZX wii but I do not have a real spectrum to test the results. I used the information taken from Harele…
... writing in the ULA video register the second screen byte it ... cycle and if the I register is between 0x40 and x7F ... screen byte the value of R register.
This emualtes the ... -
ULA snow effectIt's wintertime, you know. [quote="http://ramsoft.bbk.org.omegahg.com/floatingbus.html"]when the I register falls in the range 0x40-0x7F then the UL…
... /floatingbus.html"]when the I register falls in the range 0x40 ... address
A7-A0 = the R register of the Z80
2. Load R with an initial 'offset' value ... line (128 tacts) so that R is incremented once every 4 ... -
ZEsarUX-7.1Hi! There’s a new stable version of ZEsarUX, version 7.1! The next 24th of September it will be 5 years old :) So this is a special anniversary…
... setting --random-r-register to generate random value for R register on every ... Useful to avoid same R register in the start of games ... *Now you can use every register, variable, number on any ... *readdir call was incrementing PC register when there were no more ... -
Can someone run this test program on a real Spectrum 48K?I've knocked up a small test program just to satisfy my emulation OCD if someone with a real 48K Spectrum can spare a couple of minutes to run it.? …
... !", "Illegal interrupt response" or "Incorrect R register value". I'm kind of ... -
Emulator compatibility with real SpectrumHi emulator programmers... Having spotted for the last 6 months that my iPAQ is still missing a Spectrum emulator I started typing last tuesday - an…
... ) use bit 7 of the R register as a flag.
Be ... only change with a "LD R,A" opcode.
Are you ... -
Emulator compatibility with real SpectrumHi emulator programmers... Having spotted for the last 6 months that my iPAQ is still missing a Spectrum emulator I started typing last tuesday - an…
... the timing.
Even correct R-register emultation is often not required ... . Some games used the R-register in their protected loading routines ... will do for emulating R in LD A,R (however do set ... -
what is the best..............hi there, could anyone tell me what is the best emulater as I no longer have a spectrum but would really like to get hold of an emulator but which on…
Which emulator and assembler?Hi, I am looking to learn z80 assembly language and I feel the best option is a spectrum emulator and an assembler. Can anybody recommend the best …
... way was for testing the R register behaviour during the interrupt acknowledge ...Another Z80 processor questionOK, this time this isn't clearly covered in the FAQ, as far as I can see.... Suppose we have the CB instruction "SET b,r" (b=bit, r=register (differ…
... CB instruction "SET b,r" (b=bit, r=register (different from (hl)))... If ... the result to the initial register r.
[/quote]
It ... 's only copied to the register also if you use one ... here is in the Flags register.Fuse Emulator & Manic MinerHi All I am trying to run Manic Miner on two different Spectrum emulators on my Mac. Thing is when I load the game in Miner Willy just keeps jumpi…
... it says that Fuse's r-register emulation is not up to ...Fuse Emulator & Manic MinerHi All I am trying to run Manic Miner on two different Spectrum emulators on my Mac. Thing is when I load the game in Miner Willy just keeps jumpi…
... it says that Fuse's r-register emulation is not up to ... />
No mention of the R register here.
[quote]
Suggestions for games to test emulators?I'm going to be doing a comparision of a few different emulators, and was wondering if anyone had good suggestions of games to use as a 'benchmark' t…
Try Sabre Wulf and see if the rhinos and hippos run in the right direction.
I *think* that was poor R register emulation, but it's been so long I can't believe anyone's not got that right now. :)Suggestions for games to test emulators?I'm going to be doing a comparision of a few different emulators, and was wondering if anyone had good suggestions of games to use as a 'benchmark' t…
... /> I *think* that was poor R register emulation, but it's been ... than R register. Any of the Speedlock loaders are a good R register test ...Spectrum Emulator for Windows XPHi all. I'm struggling to get any emulators to work with Windows XP. I'm just after an emulator with Joystick support. Any suggestions? Thanks
... reference for the undocumented flags, R register, timings, and even had hints ...Spectrum Emulator for Windows XPHi all. I'm struggling to get any emulators to work with Windows XP. I'm just after an emulator with Joystick support. Any suggestions? Thanks
... reference for the undocumented flags, R register, timings, and even had hints ...Pocket Clive - 2 QuestionsHello, I've just started using Pocket Clive on my iPaq pocket PC, excellent emulator BTW. 1. I have just wrote a small BASIC program to randomly pi…
... order FRAMES byte, and the r register. The resultant 16 bit value ... ,a
ld a,r ; the refresh register is used for the ... the result in the bc register pair
That seems ...Pocket Clive - 2 QuestionsHello, I've just started using Pocket Clive on my iPaq pocket PC, excellent emulator BTW. 1. I have just wrote a small BASIC program to randomly pi…
... generator, in conjunction with the 'r' register seeding hack seems to have ... years.
Thank you 'r' register, I'm having an extra ...Determining 50hz/60hz in softwareHow can you determine in software if you are running at 50hz or 60hz?
... think that given code with R register is good. We need something ...Pseudo random numbersHi everybody, I 'd like to convert a little program i wrote in VisualBasic6.0 to C or C++ to make it run faster and for training as i'm a very very n…
... on some value of the R register (tho' preferably not if it ...Determining 50hz/60hz in softwareHow can you determine in software if you are running at 50hz or 60hz?
... using R register could actually work... but imho XOR A; LD R,A ... will HALT take). Of course R is not a full 16 ... models might actually give different R "modulos".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,…
... , a loader could check the R register, but none do that I ... figure that out, and shortcut R to match :-)
The ...
