Is this a ZX81 recording or not?

[XavSnap]

Googled:
https://romshero.com/roms/sinclair-zx81/gm-test-19xx

Loading stay in fast mode… on a black screen.

[willinliv]

Couple of nice games attached from one of the tapes, looks like a french collection 'Jeux 16K'. Well I can work out the Saturn Lander, but ZXSpace I'm not sure what I'm doing

[Fruitcake]

Thanks Fruitcake - the label on the tape says GMSave. My Dad is still around so I will ask him if he remembers about the techniques he used to save stuff.

Thanks. Any info on who made GMSave would be very useful to know, e.g. was it a purchased program or typed in from a magazine.

I think from what my Dad says at the beginning of the recording: "ZXDB with fastbaud 11" might be just my ears and imagination.

Program 1: ZXDB is likely to be the disassembler from Bug-Byte:
http://www.zx81stuff.org.uk/zx81/tape/ZXDB

Program 2: From the analysis XavSnap has done this is Breakout from CDS:
http://www.zx81stuff.org.uk/zx81/tape/Breakout

Although it would be possible to recover the programs from the wav file with some effort, there is little point for programs that are readily available elsewhere.

[XavSnap]

Nice !

[XavSnap]

Program 1: ZXDB is likely to be the disassembler from Bug-Byte:

Yes, it's the same code.

[XavSnap]

Hi Will,

I'm interested in "Escadrille" a "Micro-Systèmes magazine" #36 listing…



I typed it, but my release seem bugged.

ESCADRILLE.P

(6.18 KiB) Downloaded 283 times

Thanks Will,

[edit] "Editeur de texte" is from "Micro Systèmes #27" too… i don't know for other programs. May be...

[XavSnap]

Erratum in the #40: speed 0=slow, 9=fast

ESCADRILLE.P

(6.19 KiB) Downloaded 383 times

[XavSnap]

Pac-Man (MAGPAC) Micro-Systèmes #28 ?

pacman_n28.zip

(32.07 KiB) Downloaded 281 times

[willinliv]

Hi Xavier,

I have been trying to get a better capture of the tape 'Jeux 16k', which seems to be a collection of software that my Dad traded with a 'pen pal' from France. Some of these are pirated copies of mainstream releases but some I kind find any info about or copies online. Unfortunately there are audio drop-outs recorded into the tape, particularly on Side B, and also my expertise is minimal. I have been trying to improve audio capture (I welcome any suggestions for improvement), also I am using 'ZX81 Tape Converter' for software (I'm sorry I haven't got my head round ZXSpecTape yet!). But I upload copies here of what I have, in case they are of use in answering your questions.

Escadrille - I was not able to capture. Pac-man - I am not sure if my Dad might have recorded this on to the end of the tape because it looks different to the over programmes in waveform.

Attached is

15_Jeux16k.zip

(653.33 KiB) Downloaded 339 times

which is just the .p files
A copy of the files with .wav files is here (183MB): https://drive.google.com/file/d/1BTJnbj ... sp=sharing

Very interested if you're able to recover anything. Regards, Will

[willinliv]

Thanks. Any info on who made GMSave would be very useful to know, e.g. was it a purchased program or typed in from a magazine.

Hi Fruitcake, I asked my father about this, and he remembers using it but he's not sure yet where he might have got it from - he has suggested he might have got it from Toni Baker's book on Machine Code but he'd not sure. I'm going to send him a link to this thread so he might have some more info. On top of that earlier cassette I have come across a different one where the label suggests that it contains compiler for MC or GMSave. Link is below but there's a lot of distortion recorded into the tape - I don't know if you'd get anything useful from it.

Thanks for your interest in this, Will

https://drive.google.com/file/d/1WbLiR ... sp=sharing (~60MB)