Software Preservation

Software and Games for the Lambda 8300 / Power 3000 Computer
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kolbeck
Posts: 38
Joined: Sat May 02, 2020 3:10 pm

Software Preservation

Post by kolbeck »

I've managed to source around a handful of original tapes for the Lambda / Power - and have started to do preservation, which means

- Preservation of tape to TZX format
- High-res scan of inlay
- Photo of cassette
- Register in ZXDB / Upload to spectrumcomputing.co.uk (SC) (for long term preservation).
- Posting with info in this thread (with link to SC and maybe own site zxinfo.dk)

The intention with this thread, is to keep it simple for people to find the programs (yes, I know only a handful or two programs exists) - of course any help is appreciated.

The tapes for now that will have full preservation in the near future (if the tape loads)
- Squezee Play (SBS)
- Monkey Kong (SBS)
- Invader (SBS)
- Ormen (SBS)
- Tower of Brahma (SBS)
- Space-Hunt (SBS), 2K
- Kampvogn, Lambda 8300 2K
- S.O.S, Power 3000 2K

/Thomas
https://api.zxinfo.dk/v3/ - ZXDB API for developers
zxinfo-file-browser - Cross platform app to manage your files
https://zxinfo.dk - another ZXDB frontend
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kolbeck
Posts: 38
Joined: Sat May 02, 2020 3:10 pm

Re: Software Preservation

Post by kolbeck »

Squeeze Play - Scan-Bit-Software (SBS)

Requires 16K Ram and version 2 of the rom
Inlay.jpg
Cassette.jpg
squeeze play.tzx
(4.72 KiB) Downloaded 287 times
Entry at spectrumcomputing
https://api.zxinfo.dk/v3/ - ZXDB API for developers
zxinfo-file-browser - Cross platform app to manage your files
https://zxinfo.dk - another ZXDB frontend
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mrtinb
Posts: 1926
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Location: Denmark
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Re: Software Preservation

Post by mrtinb »

Your work is very much appreciated.

Please know, that the TZX is primarily a format for the ZX Spectrum, and few emulators for ZX81 support it.

Emulators for the ZX81 / Lambda 8300 use the P format.

On top of that, if you want to load into a real Lambda 8300 with a TZXduino, the file has to be in P format as well.
Martin
https://zx.rtin.be
ZX81, Lambda 8300, Commodore 64, Mac G4 Cube
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stefano
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Re: Software Preservation

Post by stefano »

I think I understand the reason for using tzx, it allows the creation of very accurate tape images and allows to pack many program blocks in a single file.
Probably excessive accuracy is even uncomfortable (I'm thinking at the leading noise in a tape), but it is still possible to extract a P file from a TZX. Creating a TZX from P files is obviously possible but with limited results.

Are you using maketzx?
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kolbeck
Posts: 38
Joined: Sat May 02, 2020 3:10 pm

Re: Software Preservation

Post by kolbeck »

I am using the ZX81 Tape Converter found her: https://www.zx81stuff.org.uk/zx81/tapeu ... rview.html

It also has the option to save as P file, I just forgot - but will try to remember next time.

Creating a P from TZX should be easy in most cases, but I don’t know of any tools that can do that.

Playing back a tzx into a zx81/Lambda shouldn’t by theory be an issue, if the player is compliant to the tzx specs - they load fine on a real machine using my TZXDuino device
https://api.zxinfo.dk/v3/ - ZXDB API for developers
zxinfo-file-browser - Cross platform app to manage your files
https://zxinfo.dk - another ZXDB frontend
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mrtinb
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Location: Denmark
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Re: Software Preservation

Post by mrtinb »

I have only used P files with my TZXduino, so I thought it was the only thing working. My mistake.
Martin
https://zx.rtin.be
ZX81, Lambda 8300, Commodore 64, Mac G4 Cube
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kolbeck
Posts: 38
Joined: Sat May 02, 2020 3:10 pm

Re: Software Preservation

Post by kolbeck »

Monkey Kong - Scan-Bit-Software (SBS)

Requires 16K Ram and version 1 of the rom
Monkey_Kong_Inlay_Front.jpg
Monkey_Kong_Instructions_DK.jpg
Monkey_Kong_Cassette.jpg
MonkeyKong(SBS)(Rom v1).p
(10.02 KiB) Downloaded 226 times
MonkeyKong(SBS)(Rom v1).tzx
(10.24 KiB) Downloaded 215 times
Entry at spectrumcomputing
https://api.zxinfo.dk/v3/ - ZXDB API for developers
zxinfo-file-browser - Cross platform app to manage your files
https://zxinfo.dk - another ZXDB frontend
Buleste
Posts: 2
Joined: Fri Feb 23, 2024 4:28 am

Re: Software Preservation

Post by Buleste »

The latest versions of TZXDuino can play p files and ZX-81 TZX files so should work on the Lambda 8300 but I have a friend testing some just in case.
Buleste
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Joined: Fri Feb 23, 2024 4:28 am

Re: Software Preservation

Post by Buleste »

Buleste wrote: Fri Feb 23, 2024 6:34 pm The latest versions of TZXDuino can play p files and ZX-81 TZX files so should work on the Lambda 8300 but I have a friend testing some just in case.
My friend has tested .p and .tzx files from here and for the ZX-81 on TZXDuino 1.20 and they work fine as well as in turbo mode.
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kolbeck
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Re: Software Preservation

Post by kolbeck »

stefano wrote: Sat Aug 26, 2023 9:26 am I think I understand the reason for using tzx, it allows the creation of very accurate tape images and allows to pack many program blocks in a single file.
Probably excessive accuracy is even uncomfortable (I'm thinking at the leading noise in a tape), but it is still possible to extract a P file from a TZX. Creating a TZX from P files is obviously possible but with limited results.

Are you using maketzx?
It is actually quite simple. The TZX version is just a P81(the format containing filename at the beginning) file wrapped in a id 0x19 block - main advantage of using TZX from my point, is that it supports multiple programs in one file as you mention - and is supported by various TZX players. From memory many emulators performs a reset when loading .P files, which is a challenge if a program has to be loaded in multiple parts - for example in case of program one being some kind of initializing, and second program the real one. Again, not 100% sure - as I mainly use the real hardware and not emulators :-)

/Thomas
https://api.zxinfo.dk/v3/ - ZXDB API for developers
zxinfo-file-browser - Cross platform app to manage your files
https://zxinfo.dk - another ZXDB frontend
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