Questions tagged [zx-spectrum-clones]
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24 questions
15 votes
1 answer
899 views
Why does this Soviet floppy controller have two windows in the chip package?
This is a picture of the KR1818VG93, a Soviet clone of the WD1793 floppy controller. It was used in some Spectrum clones: (source) What are the two windows in the chip package for? They appear to ...
- 833
9 votes
3 answers
823 views
ZX Spectrum - guidelines for porting to PC and more are appreciated
I want to make a surprise for my father. Back in the 80s my father made a game for a custom clone (called Santaka) of the ZX Spectrum. I have all the digital files needed for it to work, but I'm ...
- 263
6 votes
4 answers
1k views
Fire button of Timex TC/TS 2068 Joystick
These pages wos and timex.comboios.info suggest the fire button of the Timex TC/TS 2068 joystick is read at bit 4. Input: bit D0: up (0=active) bit D1: down bit D2: left bit D3: ...
- 2,827
7 votes
2 answers
1k views
Did any ZX Spectrum clones use the Z80's interrupt mode zero?
The standard Sinclair ZX Spectrum only used mode 1 and mode 2 interrupts but the Z80 also has a mode 0 interrupt that the original Speccy never used. But there were many exotic clones of the ZX ...
- 8,214
7 votes
1 answer
510 views
What are the differences between Leningrad-1 and Leningrad-2?
From Planet Sinclair Leningrad-1: A simple and cheap machine, this Spectrum clone acquired widespread popularity. Not very Spectrum-compatible, due to the way the machine was designed. Leningrad-2: A ...
- 41.2k
3 votes
1 answer
425 views
Where can this "boot.B" file be coming from on this Spectrum TR-DOS disk image?
After working on some tools that parse the TR-DOS disk image format .TRD files for a while I just noticed that one of the game disk images I had downloaded "La Abadia Del Crimen", only has three files ...
- 8,214
14 votes
1 answer
1k views
Did the Samsung SPC-650 have any hardware or firmware differences to the genuine Sinclair Spectrum+?
There was a clone of the Sinclair Spectrum+ in South Korea called the Samsung SPC-650 that looks identical to original British version with just an extra model number/logo. It even retains the ...
- 8,214
7 votes
2 answers
575 views
Details of ZS Scorpion port 0x1ffd
There's this page about the ZS Scorpion, and I'm reading about the way bankswitching works. Port 0x7ffd is the same as on western ZX Spectrums, but to double the amount of RAM to 256k and also the ...
- 41.2k