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ZXSpin 0.7 public testingOk, now that the private testing phase is over, I need to get more people testing ZXSpin 0.7 I am not terribly interested in emulation problems, bec…
When playing RZX, "CPU speed" works like old "Fullspeed" - ie affects interrupt frequency ... -
ZXSpin 0.7 public testingOk, now that the private testing phase is over, I need to get more people testing ZXSpin 0.7 I am not terribly interested in emulation problems, bec…
... playing RZX, "CPU speed" works like old "Fullspeed" - ie affects interrupt ... />
As for the RZX playing, if you increase the ... i] the RZX spec, then you'll realise that interrupt frequency is ... CPU changes whilst replaying an RZX, thanks for pointing it ... -
ZXSpin 0.7 public testingOk, now that the private testing phase is over, I need to get more people testing ZXSpin 0.7 I am not terribly interested in emulation problems, bec…
... ;397660]As for the RZX playing, if you increase ... the RZX spec, then you'll realise that interrupt frequency ... changes whilst replaying an RZX, thanks for pointing it ... skip remaining zero-input rzx-frames with no ill ... CPU cycles in empty rzx-frames only, in this ... -
ZXSpin 0.7 public testingOk, now that the private testing phase is over, I need to get more people testing ZXSpin 0.7 I am not terribly interested in emulation problems, bec…
... recordings that I've made. RZX isn't all about recording ... nothing more than merging several rzx-frames into one emu-frame ... very special case of strict interrupt sequence with no inputs) there ... -
ZXSpin 0.7 public testingOk, now that the private testing phase is over, I need to get more people testing ZXSpin 0.7 I am not terribly interested in emulation problems, bec…
... nothing more than merging several rzx-frames into one emu-frame ... very special case of strict interrupt sequence with no inputs) there ... flow will break and the RZX will fail to playback after ... -
ZXSpin 0.7 public testingOk, now that the private testing phase is over, I need to get more people testing ZXSpin 0.7 I am not terribly interested in emulation problems, bec…
... flow will break and the RZX will fail to playback after ... rzx-frame in advance and then decide if skipping that particular interrupt ... -
ZXSpin 0.7 public testingOk, now that the private testing phase is over, I need to get more people testing ZXSpin 0.7 I am not terribly interested in emulation problems, bec…
... rzx-frame in advance and then decide if skipping that particular interrupt ... -
While we're on about graphics...I did this for ZXSpin: [img]http://sites.google.com/site/pauldunn/CRT.png[/img] Which is a 2x filter, simulating (badly) a CRTdisplay. This is the…
... , is it possible to sync spectrum's interrupt to division of PC ... 's monitor interrupt. E.g. speccy is 50Hz ... we have emulator running Speccy interrupt at 60Hz, while number of ... screen refresh synced with ZX interrupt. Downside is that Speccy will ... -
While we're on about graphics...I did this for ZXSpin: [img]http://sites.google.com/site/pauldunn/CRT.png[/img] Which is a 2x filter, simulating (badly) a CRTdisplay. This is the…
... , is it possible to sync spectrum's interrupt to division of PC ... 's monitor interrupt. E.g. speccy is 50Hz ... we have emulator running Speccy interrupt at 60Hz, while number of ... screen refresh synced with ZX interrupt. Downside is that Speccy will ... -
While we're on about graphics...I did this for ZXSpin: [img]http://sites.google.com/site/pauldunn/CRT.png[/img] Which is a 2x filter, simulating (badly) a CRTdisplay. This is the…
... , is it possible to sync spectrum's interrupt to division of PC ... 's monitor interrupt. E.g. speccy is 50Hz ... we have emulator running Speccy interrupt at 60Hz, while number of ... screen refresh synced with ZX interrupt. Downside is that Speccy will ... -
Is there any video input on expansion bus?Imagine you want to build a custom display hardware, for instance, to add hardware sprites to display. Is it possible to design such a device so that…
... retrace interrupt, but its period is too large to keep proper sync ... 48K ULA, or the composite sync signal, present in the RGB ... -
Some Beeper TunesAfter doing a verion of [URL="http://freestuff.grok.co.uk/vbspec/popcorn.szx"]popcorn[/URL] a few weeks back, I got a bit carried away with doing a f…
... . Like Firefly it uses an interrupt routine to read and play ... routine uses to stay in sync (this is why the tempo ... 's all synced to the interrupt frequency, primarily so the melody ... -
KING OF PONG: Pong revisitedHello everybody. I'm proud to announce you that my last personal project for the ZX Spectrum, "KING OF PONG" is available to download here at WOS si…
... know you can sync your code to the vbl interrupt. That's ... -
Arkos TrackerHi all, I'm proud to present you my Windows-based Tracker : Arkos Tracker, for you to compose for Spectrum, CPC and MSX. It requires .NET 3.5 at lea…
... HW timers to sync with, except for frame interrupt). If the player ... -
Arkos TrackerHi all, I'm proud to present you my Windows-based Tracker : Arkos Tracker, for you to compose for Spectrum, CPC and MSX. It requires .NET 3.5 at lea…
... HW timers to sync with, except for frame interrupt). If the player ... -
Help! Reverse engineering a Spectrum game[deleted]
... in tools...
HALT/Interrupt:
Vsync is one ... throw in a halt to sync the frame whenever you feel ... running on the 50hz interrupt to keep in sync. Hires colour was ... also interrupt driven.
16 ... -
Gigascreen - programming guideDoes anyone know of a programming guide for the 128K gigascreen screen mode, specifically a persistence colours table, some code (pref. C level or BA…
... ;509532]You really need an interrupt-driven machine code routine to ... frame (via HALT, or an interrupt routine, or PAUSE 1 at ... TV refresh rate is in sync - but yeah, any emulator that ... -
So what is the best Spectrum?I've had a search and even though i can remember a similar thread somewhere I'll twist it a bit. Whats the best "unmodified" Spectrum? (modification…
... to generate the video sync because 3.5Mhz doesn ... generates the right video sync for NTSC and the ... that generates the right video sync for PAL.
interrupt routine that takes up ... reading code in the interrupt routine, whereas the the ... -
ZX80 and 81 hardware questionsI'm finding a lot of the documentation that is ostensibly about the hardware of the ZX80 and 81 to be primarily about the software. I was hoping some…
... IOREQ active (ie, interrupt acknowledge) triggers horizontal sync, with sources diverging ... 16 cycles after after interrupt acknowledge; this isn't ... timer triggers both horizontal sync and an NMI simultaneously ... 'd receive a maskable interrupt and then a non- ... -
What paging scheme is the "standard" for 128K models?Sinclair implemented an arrangement so that even numbered pages are non-contended, and odd numbered pages are contended (quoting from memory, haven't…
... =csmith;583148]Working out the interrupt timing will be fun. It ... the machine, merely INT and SYNC to find out if interrupts ... IM 2 to run an interrupt handler that OUT's a ... . If it is, then the interrupt will trigger on h-retrace ... -
What paging scheme is the "standard" for 128K models?Sinclair implemented an arrangement so that even numbered pages are non-contended, and odd numbered pages are contended (quoting from memory, haven't…
... . This is repeated at each interrupt.
The screen ... The scope shows that the interrupt is actually triggered 22us after ... falling edge of the horizontal sync pulse.
UPPER TRACE: ... the reaction time from the interrupt triggering to the moment ... -
What paging scheme is the "standard" for 128K models?Sinclair implemented an arrangement so that even numbered pages are non-contended, and odd numbered pages are contended (quoting from memory, haven't…
... ;583974]With regards to the interrupt, consider the horizontal counter, ... the time from the horizontal sync pulse to the start of ... (16 / 48 clocks) and horizontal sync (32 clocks).
... falling edge of the horizontal sync signal to 32 pixels within ... -
The So What's This Buzzsaw All About Then? Thread.Erm. This: [URL="http://www.joefish.co.uk/speccy/Joefish_Buzzsaw_Demo_1.tap"]http://www.joefish.co.uk/speccy/Joefish_Buzzsaw_Demo_1.tap[/URL] Keys…
... by line. The computers interrupt is in sync with the start of ... -
BorderTron 3000A little bit of speccy-related fun for a Friday afternoon... I've knocked together a program for Windows which I've called Bordertron 3000 (a suitabl…
... of NOPs until the next interrupt, so depending on how ... the music player takes, the interrupt can be triggered 0, ... . This will make it on sync.
in ... doesn't matter if interrupt occurs on 0,1,2 ... contention to take back the sync, we can use bottom ... -
Revisiting Spectrum CPU clock regenerationWarning: This post will be a bit nerdy :-) Some time ago, I experimented with phase locked loop circuits as a possible way to regenerate the Spectru…
... it's still nicely in sync with the Spectrum clock despite ... number of cycles since the interrupt, and see if this is ... -
SPECTRA New from Paul FarrowLooks good! Read about it [URL="http://www.fruitcake.plus.com/Sinclair/Spectrum/Spectra/SpectraInterface.htm"]here[/URL]
... required for SPECTRA to operate (sync timing with ULA).
The ... remain in sync with the Spectrum, and use the interrupt signal to ... br /> 2. Have an alternative sync mechanism. For 128K users, provide ... , and either detect the sync here or have a jumper ... -
SPECTRA New from Paul FarrowLooks good! Read about it [URL="http://www.fruitcake.plus.com/Sinclair/Spectrum/Spectra/SpectraInterface.htm"]here[/URL]
... signal to get the video sync, you will have to take ... remain in sync with the Spectrum, and use the interrupt signal to ... .
2. Have an alternative sync mechanism. For 128K users, provide ... interface, and either detect the sync here or have a jumper ...
