
Search found 171 matches
- Tue Jun 05, 2018 11:13 am
- Forum: Development
- Topic: ZX81 ULA-in-a-CPLD
- Replies: 233
- Views: 75263
Re: ZX81 ULA-in-a-CPLD

- Wed Jan 31, 2018 6:44 pm
- Forum: Hardware
- Topic: zx spectrum in zx81 case
- Replies: 63
- Views: 25120
Re: zx spectrum in zx81 case
Very, very nice
- Sat Jan 20, 2018 7:33 pm
- Forum: Hardware
- Topic: zx spectrum in zx81 case
- Replies: 63
- Views: 25120
Re: zx spectrum in zx81 case
A bit more info on my build. Dont buy the IC "packs" from ebay. I got some new CPLDs from elsewhere the first out the packet programmed immediately. Then the Eprom wasnt recognised in either of my programmers. Another eprom programmed fine. Next the test - lots of coloured squares and the Z80 gettin...
- Sat Jan 06, 2018 4:27 pm
- Forum: Hardware
- Topic: zx spectrum in zx81 case
- Replies: 63
- Views: 25120
Re: zx spectrum in zx81 case
Hi Claudius, The CPLD programming failed, below is the log file. Can you say if its the file, the programmer or the board that is the problem/ Info (209060): Started Programmer operation at Sat Jan 06 15:20:41 2018 Info (209006): Unrecognized device Error (209001): JTAG ID code specified in JEDEC ST...
- Thu Jan 04, 2018 8:16 pm
- Forum: Hardware
- Topic: zx spectrum in zx81 case
- Replies: 63
- Views: 25120
Re: zx spectrum in zx81 case
Hi, the Quartus software hadnt installed correctly. Probably my fault. But the links above sorted it out. I've now got to the point where Im ready to try burning the CPLD.... Once I solder on the CLPD socket which just arrived today. Will report back on progress when i get it done, probably at the w...
- Wed Jan 03, 2018 10:10 pm
- Forum: Hardware
- Topic: zx spectrum in zx81 case
- Replies: 63
- Views: 25120
Re: zx spectrum in zx81 case
The Library was downloaded, but the exe doesnt seem to be although I think I used the download manager on the page. How do I install the Library? Does the exe pick it up when installing? I dont know if i'll get much more done tonight as Im up at stupid oclock in the morning for work and need to get ...
- Wed Jan 03, 2018 9:56 pm
- Forum: Hardware
- Topic: zx spectrum in zx81 case
- Replies: 63
- Views: 25120
Re: zx spectrum in zx81 case
Cheers Claudius I got as far as the drivers. Theres nothing in the Quertus folder other than a Common folder. Have I installed the wrong package? There is a folder at the same level called: modelsim_ase and drivers folder inside that. Im installing Flex IT 9 ? drivers just now from C:\altera\13.0sp1...
- Tue Jan 02, 2018 2:25 pm
- Forum: Hardware
- Topic: zx spectrum in zx81 case
- Replies: 63
- Views: 25120
Re: zx spectrum in zx81 case
Brilliant Claudius, at the moment Im more confused than normal with the choices... A step by step guide will be perfect, don't assume I have any prior knowledge on this.
Thanks
Dave
Thanks
Dave
- Tue Jan 02, 2018 11:40 am
- Forum: Hardware
- Topic: zx spectrum in zx81 case
- Replies: 63
- Views: 25120
Re: zx spectrum in zx81 case
Hi McKloud, while waiting for the postman I downloaded and installed ModelSim-Altera Starter Edition 13.0.1.232 Is there any chance you could tell me if thats what I need to program the CPLD? If it is what projects/files do I load and what options I use? I only need to know how to program the CPLD j...
- Mon Jan 01, 2018 6:46 pm
- Forum: Hardware
- Topic: zx spectrum in zx81 case
- Replies: 63
- Views: 25120
Re: zx spectrum in zx81 case
Thanks McKloud,
I guess I have a few mods to do tomorrow. Brilliant photos and explanations, hopefully I wont be too far behind getting mine working.
I guess I have a few mods to do tomorrow. Brilliant photos and explanations, hopefully I wont be too far behind getting mine working.