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Does ScanLine[0] have a left border?My emulator couldn't handle Cobra or ShortCircuit so I added some rough port FF values. I now want to make it a bit more accurate. The FAQ gives me a…
My emulator couldn't handle Cobra or ShortCircuit so ... line takes exactly 224 T states. After an interrupt occurs, 64 line times ... ]! If a TV could display every line would the left border ... -
How many T-states takes PUSH DE ?Hi. Just a quick one. According to z80.info docs, a PUSH DE should take 11 T-States to be executed. But WHAT if SP is pointing to Contended Memory,…
... PUSH DE should take 11 T-States to be executed.
T states looks OK, but shouldn't it take longer ... interrupts disabled but that shouldn't change the fact that the ... to generate the pic.
I think this 11 T states info ... -
The direct bus or indirect one... that is the questionThe Ethernet project continues...and I'm in a quandry. So I've managed to implement enough socket library for the W5100 that socket, bind, listen, a…
... sends the full address with every read or write anyway!
Which is many many more T-states than an INIR instruction!
(Yes ... instance, you don't have to keep writing out the MSB, but ... would eat up 30-odd T-states including the c register increment ... -
Difference in emulator screen sizes and coloursSeeing as Greencard's gone out drinking... I've done a comparison between Spectaculator and ZXSpin. ZXSpin's full screen with border is taller than S…
... cycle. Some use it to generate fantastic effects, such as full ... 224 T states.
After an interrupt occurs, 64 line times (14336 T states ... . All this takes 224 T states. Every half T state a pixel is written ... -
Scrolling loader counter in 85 T-States?Would it be possible to write a scrolling loader counter in 85 T-States? I have a custom screen load routine that loads attribute first, then the …
... scrolling loader counter in 85 T-States?
I have a ... scrolling load counter in 85 t-states. Should be possible to update ... stack useage. My loader doesn't touch the stack, no calls ... -
What would be the simplest tape loading routine?I'm searching for some small assembly snippet I can use to load a (headerless or not) block from tape into RAM I can embed in my C games to load furt…
... approx. 14,000 T states. But if
an 'edge' is found ... CALL 05E7,LD-EDGE-1 Every edge is considered until< ... subroutine takes 465 T states, plus an additional 58 T states for each ... -
Making sound using the BEEPER in AssemblyI had a look at the the documentation but it doesn't make sense to me. To make music just the beeper all I have to do is send ones and zeros to one o…
I don't think you can see the ... might add some 10-20 T states per an OUT perhaps, but notice ... that this happens once per 1208 T states ... ]
Here, an OUT occurs once every 52 T states regardless of the ... -
Tricks to make mirror image of a graphic?I've been working on a sprite routine for lots of sprites and animations. I'm only storing right facing graphics, and converting them to left facing.…
... mirroring an 8x8 character square on screen. It takes 450 T-States including ... the RET, if every bit needs mirroring ... byte mirror table takes 333 T-States for an 8x8 character square. Not ... -
So many spectrum emulators! so few c64 emulators!Have you ever noticed just how many spectrum emulators there are out there? Its incredible! In fact the speccy may well be in the running as most emu…
You didn't like vice?
An extremely complex emulator....i'd have to ... who thinks vice isn't a superb emulator....but each to their ... -
Running code from the display memory?Is it possible to run machine code from the memory area used by the display file? If you were really out of memory and some part of screen is not u…
... border (the first ~14000 t-states from an interrupt), it will run at ... -
Running code from the display memory?Is it possible to run machine code from the memory area used by the display file? If you were really out of memory and some part of screen is not u…
... border (the first ~14000 t-states from an interrupt), it will run at ... />
BUT, all this desn't apply to +2A,+3, where ... -
CSSCGC 2008 has now officially begunFor coming last in the 2007 crap game compo, I have the honour and privilege of hosting CSSCGC 2008! I have now put up the CSSCGC 2008 website at …
... is a real VIC-20 emulator for the speccy.[/quote]
T-states opcoderoutine can be reduced to 26 T-states (same as my Z80 emulator ... I did on the ZX81 Emulator.
Even screenrefreshments can ... -
Fuse/SPIN vs Spectaculator border timingsHello, I'm trying to figure out at which moments the 48K ULA samples the current border color into its internal latch. To do that I wrote a small …
... book - I don't know if there is an errata someplace that ... corrects them. But 64x224 T states after an int is generated in ula ... -
TZX to TAPIs there an application for the mac which will convert TZX files to TAP? I've searched around but can't find any.
... have code in them to generate the master tape!)
rate by the CPC (fixed t-states between CPC changing the state ... />
- So, the tape hardware writing the tape can stretch the ... flashload, but *will* load into an emulator. But hey, you'll have ... -
An emulator(another on of my projects) Does anyone know how to write an emulator? The emulated computer is very simple (a MK14, infact -also by Sir Clive) and a…
... to help you with an MK-14 emulator, putting aside the ... I can't avoid sounding like Cyborg again but... writing an emulator for a ... and all the registers, latches, states, etc. through structures (or objects ... , if you're an OOP person...) At every cycle, you just ... -
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…
... variety of articles, ranging from writing an emulator, to programming in assembly to ... opcode takes a number of T-States to complete. Keep a ... the speccy updates its screen every 69888 Tstates?
- 2. ... explaining to me what T and M states are? I think ... -
BUG in zxspin and SpecEmu - read Loading speed in WAV fileI'm created a new save, but it can run at 44.1 KHz, to test it, i make a new file from WAV 44.1 KHz to 88.2 KHz. Load this file in a emulator zx-spin…
... . Divide T-States of pulse by 5.
T-States of OTLA ... play this data in Emulator only can work (without ... between 6 and 20 timer every byte [average resync is ... This data are used to generate the LOAD data to ... why you are needing an 88kHz sample rate. Needing ... -
48k AudioI'm at the point in my game where I could use a few beeps and bloops. Ive been looking at loads of different speccy books, but this whole business of…
... Let's say you're writing a scrolling game - ... screen display, 250-500 T-states (320-640?s) long ... each such chunk, using an extra data pointer, ... 24 values you can generate screechy tones in the ... different pattern into the buffer every few frames).
< ... -
Command and Conquer type game?Hey all One of my all time favourite games although not spectrum based, is the Command and Conquer series. I'm sure many of you are famailiar with…
... this demo, it will randomly generate a full screen map like ... />
If you are using an emulator, at this point you can ... only once every 3 frames, spend only about 10K T-states each time ... , and still get a fully recalculated maze every ... -
Why design a new Spectrum?Every so often, someone posts up about designing a portable Spectrum, or a new Spectrum with improved hardware capabilities, but I don't see why. I m…
Every so often, someone posts up ... , if portability isn't a problem) and install an emulator. It's a ... else.
* Yes, writing or altering an emulator takes skill, but so ... -
Loading multiload games on an emulator (EmuZWin)I know this is probably been asked a million times but I still, for the life of me, cannot figure out how to open an image without resetting the mach…
... figure out how to open an image without resetting the machine ... ). As a result, I can't play any multiload games (or ... should probably get a new emulator as this is causing me ... and I still can't find such an option to switch on ... -
PZX file support for ZX-BlockeditorDear readers, I'm working on the PZX format support for ZX-Blockeditor, as I discovered the advantage of having such a nice file format. It has a cl…
... br /> - high-compatibility to existing emulator tools.
So far ... the range of 0..FFFFh (T-States), but the CSW and PZX ... ..FFFFh, ZX-Blockeditor should generate a Generalized datablock from the ... there's another problem: Writing the pulse levels into a ... -
IDE emulation and delaysA few months ago I was told that IDE emulation, while perfectly usable, isn't accurate enough to compare it to IDE access on real hardware. On some e…
... the 'ready' check after every sector when you do a ... necessary to measure how many t-states lasts the BSY condition on ... devices would be enough. The emulator should assign a wait time ... solid state memory (which employs an internal linear sector addressing). ... -
FMV on +3eOK, so about 6 months ago i posted here that i got full motion video on +3e, with a bunch of scr files called passion. I added the glider rider music…
... send a audio sample every 322-ish t-states. The result is full ... spectrum? It will run in emulator or on real hardware. Follow ... ) unpack and run the zxspin emulator
3) set up zx ... i've seen - were you writing those IM2 streaming loaders on ... -
Emulator to create log files?Could someone please recommend a Spectrum 128K emulator that can dump the following data to an external text file, while emulating at normal speed? …
... please recommend a Spectrum 128K emulator that can dump the following ... data to an external text file, while emulating ... />
1. The number of T-states since the last interrupt, at ... -
Screen Viewer: Speccy View 4SpeccyView (v4.0) Here is my new zx spectrum screen viewer, result of this weekend's work. Features: Loads: -Standard Screen Files (6912 byte raw …
... messages etc.
Execute default emulator
Hotkeys
Save screen ... to manually resize it back every time you open a screenshot ... /> Ps. Don't expect to get images from every Tap/Tzx file ... and scr files will always generate an output. -
Rendering techniques in emulatorsI've been giving thought to the possibility of speeding up the rendering in Zero considering I've been putting it off long enough. My approach is c…
... the screen backbuffer every frame (69888 t-states that is). Swap ... and computer is running the emulator.
However, ... speccy display to backbuffer every frame. Am not even ... for Fuse as the emulator runs with good speed ... that's not an option ok? ;) -
The history of ESXDOS, the DivMMC and the DivMMC EnJOY![img]http://benophetinternet.nl/hobby/divmmc_history/1%20esxdos.jpg[/img] These are the stories behind esxDOS, the most popular operating system e…
... BeOS’ operating system which used an eeprom emulator (that LaesQ made) that ... :
- port #1F for writing can be replaced with new ... port #E7 for writing
- port #3F replace ... instruction, which takes 16 Z80 T-states.
The maximum data ...
