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Beeper and Sprites at the Same Time?[URL="https://drive.google.com/file/d/0B6XhJJ33xpOWX1pQLS14RnppNFE/edit?usp=sharing"]Why not?[/URL] "q" for quit "m" to change sprite mode any other…
... fps movement without too much t-state usage on screen? I've ... parallax effect. Anyway, I didn't mean to get too off ... -
Beeper and Sprites at the Same Time?[URL="https://drive.google.com/file/d/0B6XhJJ33xpOWX1pQLS14RnppNFE/edit?usp=sharing"]Why not?[/URL] "q" for quit "m" to change sprite mode any other…
... due to aquaplane etc. ? doesn't have to be exact.[/QUOTE ... fps movement without too much t-state usage on screen? [/QUOTE]
50fps very likely won't work. You cannot interfere with ... -
Beeper and Sprites at the Same Time?[URL="https://drive.google.com/file/d/0B6XhJJ33xpOWX1pQLS14RnppNFE/edit?usp=sharing"]Why not?[/URL] "q" for quit "m" to change sprite mode any other…
... fps movement without too much t-state usage on screen? I've ... parallax effect. Anyway, I didn't mean to get too off ... -
ZX-Modules app reportZX-Modules app report If You are interested, I want to report about the state and progress about my ZX-Modules programs. I would like to report at l…
... instead. Though I don't see why this feature would ... time.
I also don't like annoying dialogs... :-) I ... no problem to integrate a T-State info for each Mnemonic instruction ... routines and graphics drivers :-) the T-State calculation will be important. I ... -
ZX-Modules app reportZX-Modules app report If You are interested, I want to report about the state and progress about my ZX-Modules programs. I would like to report at l…
... understand you right about the T-State calculation...
I ... code. My now implemented T-State display may be useful anyway ... ]
The total T-State count of the loop depends ... values at any time, a T-State calculation is possible. That ... -
ZX-Modules app reportZX-Modules app report If You are interested, I want to report about the state and progress about my ZX-Modules programs. I would like to report at l…
[QUOTE=clausjahn;771450]Do you see a way out of that problem?[/QUOTE]
Add a check box on each line called [b]jump taken?[/b] and adjust the t-state total accordingly. -
ZX-Modules app reportZX-Modules app report If You are interested, I want to report about the state and progress about my ZX-Modules programs. I would like to report at l…
... taken?[/b] and adjust the t-state total accordingly.[/QUOTE]
T-State counting in loops).
As ... />
Now, opcodes with different T-States are shown as e ... a,b
would state 20/25 (16/21 + 4 ... -
Show some love for the Magnum Light GunI remember the reviews were mixed, but in hindsight I suspect the negativity was a result of the quality of some of those initial six games. I recal…
... by t-state counting, the CPLD taking a copy of the t-state count ... -
Pause XWhat would be the best way to implement a short delay (unlike with basic, without any key detection to cut it short) in assembly ? Basically somethi…
If you need something precise, exact T-state delay:
[url]http://z88dk.cvs.sourceforge.net/viewvc/z88dk/z88dk/libsrc/_DEVELOPMENT/z80/z80/asm_z80_delay_tstate.asm?revision=1.2&view=markup[/url] -
Ensure my interrupt handler begins at the same T-stateHi! Is there a way to ensure that an IM 2 interrupt handler starts always at the same T-state (related to the moment the ULA triggers the INT line, w…
... starts always at the same T-state (related to the moment the ... to last a number of T-states which is a multiple ... portion of instructions that aren't HALT last a number of ... described in Rotatrix documentation doesn't require any of this. -
Ensure my interrupt handler begins at the same T-stateHi! Is there a way to ensure that an IM 2 interrupt handler starts always at the same T-state (related to the moment the ULA triggers the INT line, w…
... it has finished, so whatever T-state the CPU was at the ... finish it in a certain T-state which is somehow "aligned" with ... mean, that the number of T-states from that moment, until ... I have tested, this doesn't work if the computer has ... -
Ensure my interrupt handler begins at the same T-stateHi! Is there a way to ensure that an IM 2 interrupt handler starts always at the same T-state (related to the moment the ULA triggers the INT line, w…
... has finished, so whatever T-state the CPU was at ... finish it in a certain T-state which is somehow "aligned ... , that the number of T-states from that moment, ... have tested, this doesn't work if the computer ... Therefore this technique won't work in Pentagon machines ... -
Ensure my interrupt handler begins at the same T-stateHi! Is there a way to ensure that an IM 2 interrupt handler starts always at the same T-state (related to the moment the ULA triggers the INT line, w…
... EXIT
DEC B ;+1 t-state per frame
AND B ... of their frame with 8 t-states precision and also because ... -
XPECCY (Lin/Win)im not author of this emulator. Contacts of author you may take on [URL]http://xpeccy.info[/URL] - non official home page. cpu: Z80: all (un)docume…
... Contention Test Suite and doesn't do t-state accurate frame redrawing (i ... .e Aquaplane doesn't look right) but ... -
64x48 monochrome big pixels display ideaHi. I was playing with this idea of having a simple 64x48 bytes buffer, 1 byte per pixel, then a renderer which would take that buffer and render it…
... save about 23,000 T-states, thus reducing this ... routine to about 137,000 T-states. Other suggested optimizations ... 7+4+7+4=65 t-state (per half a character). ... 65*768*2=99840 t-states. You just calculated ... overhead of 29*3072 = 89088 t-states.
50142 ... -
64x48 monochrome big pixels display ideaHi. I was playing with this idea of having a simple 64x48 bytes buffer, 1 byte per pixel, then a renderer which would take that buffer and render it…
... 7+4+7+4=65 t-state (per half a character ... ). 65*768*2=99840 t-states.[/QUOTE]
t pay attention to this suggestion ... will take 99,840 T-states. Therefore copying entire ... Considering an overhead of 29 T-states per pixel, this ... -
Features that are still wanted in Spectrum emulation.Features that are still wanted in Spectrum emulation. 4 USB joystick/gamepad input for real multiplayer games - Yes, Bomb Munchies.... - Sinclair 12…
... through processing in a given T-state step size maybe, instead of ... -
Serial comms - duzzit work?Has anyone ever successfully got two 128K Speccies (of any variant) to communicate with each other over the SERIAL / RS232 / MIDI / AUX ports? I can'…
... QUOTE]
Indeed, you can't have a dedicated clock line ... the speccies so it isn't a big problem to ... s just a case of t-state counting in the tx and ... be back in its wait state before the main program is ... even easier and you don't really need any handshaking at ... -
The best ZX Spectrum emulatorsIt's been suggested we add a sticky thread where people can recommend their favourite emulators. A couple of rules. 1. Don't just nomina…
... with, and I especially don’t want that to sound like ... ... but the code certainly doesn’t write itself, and it irks ... ). You can set breakpoints on T-state counts within a frame (“br ... to be intuitive, and don’t realise that they must read ... -
[Updated] RetroVM 1.0.4 with Recreated ZX Spectrum support.A new version available the change log: - Recreated ZX Spectrum "game mode" keyboard support. - Fix a bug with multiples machines running in para…
... in any moment (in any t state of the frame) you rutine ... (and in others) The keyboard state is not changed at all ... if we look the keyboard state only when the frame is ... -
[Updated] RetroVM 1.0.4 with Recreated ZX Spectrum support.A new version available the change log: - Recreated ZX Spectrum "game mode" keyboard support. - Fix a bug with multiples machines running in para…
... in any moment (in any t state of the frame) you rutine ... (and in others) The keyboard state is not changed at all ... if we look the keyboard state only when the frame is ... -
Small Machine Code Routines Which Maybe UsefulAs part of creating Flynn's Adventure in Bombland I created a lot of little routines to do all sorts of things. A lot of these I created based on inp…
Here's a T state delay routine, might come handy ...
; Usage: HL=delay, T states; HL > 123
Vega ARM SOC?I read that the core of the new Vega was an ARM SOC. I thought it would have been an FPGA. But it seems it's an ARM running an emulator. Anyone kn…
... border color every 224 T-states (a T-state is a CPU clock ... cycle, about 290ns). 224 T-states ... , changing the colour every 224 T-states (or every 64 microseconds ...Best Z80 Assembler for PC?There's probably already a thread for this so if somebody could please point me at it I'd appreciate it. If there isn't then please respond here wit…
... .html
It has T-State cycle counting built in, supports ...Best Z80 Assembler for PC?There's probably already a thread for this so if somebody could please point me at it I'd appreciate it. If there isn't then please respond here wit…
I'd like to see an assembler that has T-State counts but which also takes into account contention at the assembled address... And microcode breakdowns too.
D.Best Z80 Assembler for PC?There's probably already a thread for this so if somebody could please point me at it I'd appreciate it. If there isn't then please respond here wit…
... an assembler that has T-State counts but which also ... a "t(mem)" function to get the t-state count for ... -op to set the T-state count. The simplest use ... memory location. Resetting the T-State counter can be tiresome, ... there is 1 wait state per read then adjust ...Emulator developmentHi, Could anyone explain or direct to a link that explains in not to technical terms how an emulator is developed. It has always blown my mind eve…
... a count of how many T-States that instruction and its ... . When you've done 69888 T-States (for a 48k Speccy ... interrupt, subtract 69888 from your T-State counter, and go back around ... in the array). Update the state of the sound if there ...
