SpecEmu v2.8 emulator released

[Woodster]

Dunno if this is the right place for this post (other than it being in English!) but I've released SpecEmu v2.8 for PC/Windows, emulating 48/128/+2/+3/TC2048/Pentagon 128K emulation.

The main new additions from the previous release are RZX capability (with rollback recording) and a (slightly rough) implementation of the flashing quirk and 4 brightness levels of the 48K/128K ULAs. I'm told these quirks don't exist on the +2A/+3 ULA but I'm not able to test those myself.

I've put a few rather simple examples of the effects here.

In the emulator there's a "ULA colour ramping" option in the Display options which turns the quirky behaviour on, or it can be toggled on/off using the ALT+C keys. I really need to find a better name for it...

Now what I was wondering was if any of the Pentagon (or other) clones show anything like the same effect with some of those tests programs. Though to be honest, my Pentagon knowledge is lacking to the point that I don't have the slightest clue how closely those ULAs might be based on the original versions so this might well come across as a daft question to everyone

[Advertiser]

[AAA]

1. Very convenient emulator.

2. The worthy competitor Spectaculator.

Thanks for the emulator !

TESTING

Satisfaction Multicolor Pentagon:

- Successfully


Satisfaction Pentagon Part 3:

The screen twitches

[[bETA]mEN]

Is there any way to disable bilinear screen filtering in emulator?

[Woodster]

The screen twitches

To be honest I can't actually see what you mean in that part of the demo. But then I've only just dragged myself out of bed so maybe it'll become more obvious to me after a barrel of coffee

Добавлено через 5 минут

Is there any way to disable bilinear screen filtering in emulator?

Not currently unless your graphics driver gives an option to turn it off for DirectDraw. Most only really let you set options for 3D performance as far as I know.

There's a method I could use to force it off but it'd give quite a performance drop in display updating, though not anywhere near the point that a reasonably modern PC wouldn't be able to handle.

[[bETA]mEN]

There's a method I could use to force it off but it'd give quite a performance drop in display updating

g_pd3dDevice->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_NONE);
g_pd3dDevice->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_NONE);
g_pd3dDevice->SetSamplerState(0, D3DSAMP_MIPFILTER, D3DTEXF_NONE);

[Woodster]

I've already added the option to turn it off in the development version

[Antipod]

2 Woodster
Nice emulator as for me...
Finally I did see famous "rain" ULA effect
Are there any hot keyz for debbuger?( clicking buttons is not comfortable, imho ).

[Woodster]

Are there any hot keyz for debbuger?( clicking buttons is not comfortable, imho ).

Sorry, not at the moment. I need to see to that really...

[yevrowl]

SpecEmu v3.4 (build August 31st 2025) — https://specemu.zxe.io/

[zebest]

v3.4 build 26/02/26
-------------------


Double-clicking register labels in the debugger moves the disassembly to that address
Renamed debugger's "savebastap" command to "savebas"
Added LINE parameter to debugger's savebas command
Fixed issue 2/3 keyboard behaviour (Rasputin no longer starts from its main menu with issue 3 kb selected on 48K machines)
Changed to a new late timings model for 48K/128K machines (thanks, TheMartian and zjoYkileR)


v3.4 build 30/09/25
-------------------
Added "sound" command to the debugger. Select which AY channels are enabled such as "sound ab" or "sound ac"
Added "beep" command to the debugger to toggle the beeper on and off.
Improved tape mastering when paging is locked to bank 0 on 128K machines for 48K machine compatibility when loading.
Added "savebastap" command to the debugger to save the current BASIC program to a TAP image file. Usage: save bastape "prog name"