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ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…
... /> LD R,A
LD R,A
LD R,A[/code ... A is the contents of register A (bankNumber).
... (M1) cycles.
LD R,A is an extended instruction ... ) or 2.5T (read or write).
Another ... /> LD R,A
LD R,A
LD R,A
ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…
... /> [code]ADDR, ADDR, ADDR, I/R, dataAddr[/code]
However ... that "I" register can be safely changed.
I/R registers, can ... code can be used to write command control codes to FLASH ... memory Output Enable (OE) and Write Enable (WE), based on some ...ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…
... goal was to prevent a write.
But ... a refresh address [[b]I,R = 0x007E[/b]], second ... another refresh address [[b]I,R = 0x007F[/b]].
... refresh address of [[b]I,R = 0x0000[/b]], which is ... , it's clear that register data ([b]FA16..F14[/ ...So where is the random number in the Speccy ?So I am messing around with ZX Spectrum Assembler and I want a random number. I looked up previous posts and one of the links said that random number…
... language.
Most people write their own random number generator ... is probably to load the R register or the LSB of FRAMES ...Spectrum 48+ 4S - Upper RAM issue, and now a self-created problem!I recently picked up a known-flaky spectrum off eBay, to have a bit of fun fixing it and reliving youth. It was labelled as 'keyboard duff, shows…
... outputs the contents of the R register and the I registers to ... . R feeds A0 to A7, the contents of the I register goes ... the value held in the R register, except for bit 7, which ... working, otherwise you could not write and read from the DRAM ...Understanding tape edgesI've never done any tape reading code. But I've read about these "edges" on multiple occasions. Trouble is I don't understand what they heck they are…
... ’ve read eight bits, you write them to a byte, store ... rather clever. You preload the register that you wish to store ... ). So you then simply RL r, and the current value of ... gets pushed into your chosen register. Since it’s preloaded with ...Microdrive logic flow.Hi all, I've finally gotten my hands on an Interface 1 and Microdrive to continue my project, and have been analyzing the Microdrive with a logic …
... loop with some timing and r/w control as well as ... sense, I only need to write some known data to the ... imagine they fill the shift register until it's full of ...How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
...
; #FB - Q, W, E, R, & T
; #F7 - 1 ... flag
ld h, a ; write it back
ld l ... flag
ld h, a ; write it back
ld l ... flag
ld h, a ; write it back
ld l ... redundant save of the C register to A which was not ...WoS on DVD-R?Hmmm, a chat with dave and cerb on #speccy has got me thinking about putting WoS onto DVD-R ... i've done the maths on this, and if I got 40 firm or…
... about putting WoS onto DVD-R ... i've done the maths ...Help, Space-Time Productions's CNCS32.dll isn't working in w2000Hi, I know this is not a support forum, but as you were talking about remakes I decided to give it a try. However... (gosh! this looks like R Tape L…
... /> However... (gosh! this looks like R Tape Loading Error)
Trying to register the DLL with regsvr32 produces ...disk write protect on Spin ?Is there an option for Spin to default a (loaded) disk to be write protect ? I whish I have no worry when loading a perfect original disk to convert …
... a (loaded) disk to be write protect ?
I whish I ...ANN: Write Spectrum Games in C with speclib121 Announcing the sprite pack C library for the z88dk C cross compiler available from: [url="http://justme895.tripod.com/main.htm"]http://justme895.tr…
... ]
Now you can write games for the spectrum in ... is simple:
1. Write C program.
2. Run ...YM effects on Atari ST reproducable on Speccy?From the YM music format site: "SID-Voice SID-Voice is a great sound trick on the ATARI, because of low CPU consuming and great sound effects. It …
... interrupts to write values in the Envelope shape register. (YM2149 register 13). As ... , but couldn't a similar register shift be reproduced. Damn! I ...[NEW]: Spectaculator 6.0Spectaculator 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/+…
... . Disk images
can be write protected, formatted, ejected and inserted ... hex and decimal.
- Register values can be changed using ...Problem with R-TypeI thought the other day "I know, I'll have a go on R-Type". So I fired up Spectaculator and started playing, BUT, and its a big but (ooh err). When I…
... 'll have a go on R-Type". So I fired up ...Best scrolling everHi All - I've been lurking here for a while enjoying reminiscing about my magical 10 years of rubber-keyed fun back in my youth! What game featured …
... of 1+3 e.g. R-Type where the backgrounds are ... colour games I wanted to write that could make use of ...SMAX - My Spectrum Killer App that never quite materialisedThis is basically a copy of my post to CSS, for anyone that doesn't read the group:- One or two of you may, if you have particularly good memories, …
... world) will be able to write fast, glossy, machine code games ... whole bunch of weeks of R&D effort on it ...InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…
... it.
* M3: 3 tstates: write the modified value back to ... A,I or LD A,R (which copy IFF2 to the ... .
* M3: 3 tstates: write the low byte onto the ... .
* M2: 3 tstates: write high byte and decrement SP ... .
* M3: 3 tstates: write low byte and jump to ...Problem with SpectaculatorHello, It?s ages since I don?t write on this forum. I use to have Spectaculator on my PC and i don?t use it for a few months, today i try to play som…
... ages since I don?t write on this forum.
I ... ?
It is not the register cause i got the program ...I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…
... people asking "how do I write an emulator" so I'll ... assembly. I would like to write an emulator for the Mac ... that it is possible to write an emulator in this language ...Sprites flickeringI am trying to write a Spectrum game in machine code. I am still a beginner in programming, however I did much progress recently, i believe. Now I am…
I am trying to write a Spectrum game in machine ... delay loop is just decreasing register
until it reaches 0 ...Is the IY register used by the spectrum rom?Hi I've been writing a sprite routine and have noticed that the sprite data gets corrupted at some points. I have no idea why and can only guess tha…
... the problem. Does the IY register need to hold a certain ...R-Type RZXThis has just been submitted to the [url="http://www.rzxarchive.co.uk"]RZX Archive[/url] R-Type is an excellent arcade conversion, great use of colo…
... "]RZX Archive[/url]
R-Type is an excellent arcade ...Fastest way to write something to screen$Hi, I just got pasmo.exe and start playing with attr scrolling, well, not scrolling, just write different values to a block and see if I can introdu…
... scrolling, well, not scrolling, just write different values to a block ...Trig questionI'm trying to write a function that describes a 2D circle in 3D space - that's not important, just a bit of background! I've almost done it, but the…
I'm trying to write a function that describes a ... />
Z,J,K and R are known, but I want ...
