Search found 147 matches
- Thu Feb 29, 2024 8:01 pm
- Forum: Z88
- Topic: Transfer files to Z88
- Replies: 4
- Views: 1949
Re: Transfer files to Z88
I tried creating a Z88-to-Mac cable with those instructions and I get nothing. The Mac DIN-8 connector is a strange serial port but I did find this picture that helps turn it into a normal DB9 (or DE9). Still, that did not help. PC-Link is just waiting and the Mac software never finds the Z88. MacSe...
- Tue Apr 25, 2023 12:55 am
- Forum: ZX Spectrum Lounge
- Topic: ZX Interface 1 with Microdrive problems
- Replies: 6
- Views: 6713
Re: ZX Interface 1 with Microdrive problems
I'm up to 87K now. I had a second spare motor and that did even better. I'll need to check if it will now read/write files on a QL formatted cartridges when hooked to a QL. Before the second motor swap, it could get the directory listening hooked to a QL, but nothing else. I found the following feat...
- Tue Apr 18, 2023 3:11 am
- Forum: ZX Spectrum Lounge
- Topic: ZX Interface 1 with Microdrive problems
- Replies: 6
- Views: 6713
Re: ZX Interface 1 with Microdrive problems
Ok, I'm finally at 83K formatted, which is likely the best I can expect. I followed the Byte Delight refurbishment guide. https://www.bytedelight.com/?page_id=1623 So, I changed the two capacitors (0.22uf and 0.47uf) with new ones (two 1uf's). I need to locate a couple of 100pf ceramic capacitors to...
- Wed Apr 12, 2023 5:56 pm
- Forum: ZX Spectrum Lounge
- Topic: ZX Interface 1 with Microdrive problems
- Replies: 6
- Views: 6713
Re: ZX Interface 1 with Microdrive problems
On the motor sits a rubber roller. This can need cleaning and if heavily used in the past it's a good idea to remount it upside down so the tape is moved by the "fresh" part of the rubber. Thank you. I have used two different rubber rollers and cleaned and rotated each. There doesn't seem to be any...
- Wed Apr 12, 2023 5:21 pm
- Forum: ZX Spectrum Lounge
- Topic: ZX Interface 1 with Microdrive problems
- Replies: 6
- Views: 6713
Re: ZX Interface 1 with Microdrive problems
I don’t know. But has the head been cleaned? Does it look worn? If the ULA was faulty, I would not expect it to work at all. Mark I don't think the head is worn and I have cleaned it thoroughly with isopropyl alcohol and a cotton swab. The center part still looks shiny and you can still see the dis...
- Tue Apr 11, 2023 6:57 am
- Forum: ZX Spectrum Lounge
- Topic: ZX Interface 1 with Microdrive problems
- Replies: 6
- Views: 6713
ZX Interface 1 with Microdrive problems
Does anyone know best way to debug a microdrive. I seem to have a faulty one. When hooked to my Spectrum via ZX Interface 1, it formats a microdrive cartridge anywhere from 2K to about 35K. I can even save and load a program. It's never consistent and mostly settles on between 15 and 20K. The same m...
- Mon Mar 13, 2023 7:26 am
- Forum: Software
- Topic: ZX81 to ZX Spectrum conversion possible
- Replies: 59
- Views: 201034
Re: ZX81 to ZX Spectrum conversion possible
I got a reply from Charlie: The vLA82 analogue circuitry is fairly close to the later Sinclair ULAs but ended up slightly more sensitive. I'll send you the schematic... Speaking of sensitivity, I also tried my 4th generation ULA (out of 5) with different volume levels (between 70% and 100% at 5% inc...
- Sun Mar 12, 2023 2:55 am
- Forum: Software
- Topic: ZX81 to ZX Spectrum conversion possible
- Replies: 59
- Views: 201034
Re: ZX81 to ZX Spectrum conversion possible
So I got ZX Slowloader to work on my 48K Spectrum with the vLA82 replacement ULA from Charlie Ingley. So indeed, the version of the ULA seems to matter. With the ULA clone, it was able to pick up the ZX81 audio at any level, but interestingly, only read it in when I moved it to about 80% (usually I ...
- Sun Mar 12, 2023 2:36 am
- Forum: Z88
- Topic: Z88 LCD panel
- Replies: 22
- Views: 24950
Re: Z88 LCD panel
The service manual is available on line at https://cambridgez88.jira.com/wiki/display/welcome/Cambridge+Z88 (it's in there somewhere, although I get an annoying "Browser not supported" error since they changed something a while ago :evil: ) Anyway, the relevant paragraph says: <quote> 1.2 Adjustmen...
- Mon Mar 06, 2023 12:58 am
- Forum: WANTED
- Topic: Looking for ZX Interface 1
- Replies: 0
- Views: 6599
Looking for ZX Interface 1
I'm in the US and new to the Spectrum. Looking for a working ZX Interface 1 (don't need packaging or microdrive). Hard to find on in the US.