A brand new video showing a F.IZ. disk drive controller in the ZX Spectrum version
https://youtu.be/7Js6sFHqqX4
Search found 542 matches
- Thu Mar 07, 2024 3:32 pm
- Forum: Hardware
- Topic: ZX81 floppy disk systems
- Replies: 17
- Views: 6640
- Mon Nov 27, 2023 8:59 am
- Forum: ZX Spectrum Lounge
- Topic: How to run .TRD spectrum files ?
- Replies: 3
- Views: 19636
Re: How to run .TRD spectrum files ?
The TRD format is a pure sequential, sorted dump of the disk sectors. The formatting is guessed by the emulator depending on the file size.
I suggest to try with SAMDISK, it is usually able to convert to other disk dump formats by adding the needed extra detail.
I suggest to try with SAMDISK, it is usually able to convert to other disk dump formats by adding the needed extra detail.
- Mon Oct 09, 2023 5:18 pm
- Forum: Software
- Topic: Dallas game port (32K)
- Replies: 0
- Views: 22238
Dallas game port (32K)
There's surely space for improvements, like a colour version of the game or trying to exclude the initial banner and compress the maths by using the ROM. By the way here's a first, mostly untested version of the DALLAS game for the Lambda with 32K RAM, in the three ROM flavors (V1, V2, and CAC3/NF30...
- Mon Oct 09, 2023 1:04 pm
- Forum: Lambda 8300/ Power 3000 Lounge
- Topic: NF300 and CAC-3 peculiarity
- Replies: 0
- Views: 24133
NF300 and CAC-3 peculiarity
This is an odd one. While disassembling the CAC-3 and NF300 ROMs I ran into a strange behaviour of th STK-FETCH routine. First of all, differently than on the ZX81, it was positioned at $20 permitting it to be invoked by RST rather than CALL and save a couple of bytes every time. Ok, that happens al...
- Fri Oct 06, 2023 3:22 pm
- Forum: Lambda 8300/ Power 3000 Lounge
- Topic: Different ROMs for Lambda 8300
- Replies: 42
- Views: 51734
Re: Different ROMs for Lambda 8300
I'm halfway in the process of tracking the ROM differences on the CAC-3 and NF300 models. They're VERY similar, but apparently the NF300 is sensitive to the machine code included in a REM line, or perhaps the LOADed block, even if working, should be formatted slightly differently. So, supposing we h...
- Wed Oct 04, 2023 8:07 pm
- Forum: Lambda 8300/ Power 3000 Lounge
- Topic: Different ROMs for Lambda 8300
- Replies: 42
- Views: 51734
Re: Different ROMs for Lambda 8300
I'm close to the end of a first pass on the z88dk libraries. There's still a couple of very small differences between the lambda ROM (new type) and the cac3. It's a very small difference regarding the number to string conversion, I'll looks closer to the zx Spectrum, it lacks the string termination ...
- Wed Oct 04, 2023 8:50 am
- Forum: Development
- Topic: A scanner for you Zx81/Specturm.[WIP/DIY]
- Replies: 24
- Views: 13237
Re: A scanner for you Zx81/Specturm.[WIP/DIY]
When the TV brightness passed a threshold, the raster picture was generating a buzzing noise which was received by a software loop.
The software was changing the brightness of video portions to find the right spot you were pointing at
A scanner requires an audio oscillator I think?
The software was changing the brightness of video portions to find the right spot you were pointing at
A scanner requires an audio oscillator I think?
- Tue Oct 03, 2023 7:40 pm
- Forum: Development
- Topic: A scanner for you Zx81/Specturm.[WIP/DIY]
- Replies: 24
- Views: 13237
Re: A scanner for you Zx81/Specturm.[WIP/DIY]
I may be wrong, but it looks a similar concept to the light pen for the Spectrum, it was for the main part a software trick
- Mon Oct 02, 2023 1:22 pm
- Forum: Lambda 8300/ Power 3000 Lounge
- Topic: Different ROMs for Lambda 8300
- Replies: 42
- Views: 51734
Re: Different ROMs for Lambda 8300
I'm in touch to @olofsen, he shared his work and I'm merging as much as possible in the current z88dk tree. I'm working on the emulators so I'm not totally sure that the updated code is still generating valid raster pictures on the real TV sets, 50hz and 60hz, but the rest of the library is surely i...
- Sat Sep 30, 2023 1:13 am
- Forum: Sinclair Misc
- Topic: Can Anyone Answer These Questions - MW100 Printer
- Replies: 5
- Views: 6094
Re: Can Anyone Answer These Questions - MW100 Printer
I think it is worth to mention also the Seikosha GP50S. It was another one fully compatible with the zx printer