Scuttlebutt

People are still making stuff for the Sinclair related machines. Tell us about new games and other software that runs on the Spectrum, ZX80/ZX81, Pentagon and Next.
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danlucio
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Re: Scuttlebutt

Post by danlucio »

I loved the carton game style
Ralf
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Re: Scuttlebutt

Post by Ralf »

How do you know it's 50fps? Can you tell just by looking, or is there some other way you'd know that?
Actually there is some hidden feature in Spin emulator which enables it. I don't remember the details but you have to press some obscure shortcut and extra buttons will appear. One of them is "advance emulator by one frame". So you pause the emulator first, then press the button, game advances by one frame and you see if something moved or not ;)
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Pegaz
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Re: Scuttlebutt

Post by Pegaz »

Interesting.
Maybe someone knows which shortcut activates this option.
Does SpecEmu have such a feature?
Ralf
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Re: Scuttlebutt

Post by Ralf »

Maybe someone knows which shortcut activates this option.

Found it:
https://www.worldofspectrum.org/forums/ ... ent_141012
There's also the option to "frame advance" whilst paused - pause the emulation, then right click the pause button. The buttons will be replaced with a new set - debugger, full speed and frame advance. Clicking frame advance will emulate one frame and then stop.
dfzx
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Re: Scuttlebutt

Post by dfzx »

Ralf wrote: Fri Mar 02, 2018 10:09 am Maybe someone knows which shortcut activates this option.

Found it:
https://www.worldofspectrum.org/forums/ ... ent_141012
There's also the option to "frame advance" whilst paused - pause the emulation, then right click the pause button. The buttons will be replaced with a new set - debugger, full speed and frame advance. Clicking frame advance will emulate one frame and then stop.
I'm trying to think what "frame advance" actually means. Does it mean "run as far as the next HALT instruction"? Or until the next interrupt fires? What actually would a frame advance be, in Spectrum terms?
Derek Fountain, author of the ZX Spectrum C Programmer's Getting Started Guide and various open source games, hardware and other projects, including an IF1 and ZX Microdrive emulator.
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Kweepa
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Re: Scuttlebutt

Post by Kweepa »

It could be as simple as 'run until 20ms (simulated) has passed'.
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