General Stuff(tm)

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stephen_usher
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Re: General Stuff(tm)

Post by stephen_usher »

Pretty easy as they were used for a great number of machines, including the TRS80 etc. They're Tandon TM-100-2 drives.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
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stephen_usher
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Re: General Stuff(tm)

Post by stephen_usher »

With a little help from my friends:



Almost boots:

Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
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stephen_usher
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Re: General Stuff(tm)

Post by stephen_usher »

Well, it's not the 74LS243s as I've swapped them as they were socketed.

The next thing I might do is convert the .IMD files I have for Kaypro boot disks into .HFE files and hook up a Gotek to take any potential floppy issues out of the picture. It will also allow me to test a large variety of images in case it's a ROM compatibility issue with the boot image causing the hang. It removes another variable.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
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rubber_jonnie
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Re: General Stuff(tm)

Post by rubber_jonnie »

stephen_usher wrote: Fri Feb 09, 2024 6:40 pm Well, it's not the 74LS243s as I've swapped them as they were socketed.

The next thing I might do is convert the .IMD files I have for Kaypro boot disks into .HFE files and hook up a Gotek to take any potential floppy issues out of the picture. It will also allow me to test a large variety of images in case it's a ROM compatibility issue with the boot image causing the hang. It removes another variable.
Definitely worth a go.
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
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stephen_usher
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Re: General Stuff(tm)

Post by stephen_usher »

I've found a disk image which will boot to the prompt now...

IMG_3571.jpeg
IMG_3571.jpeg (244.57 KiB) Viewed 139 times

But it's not reading the keyboard.

I can see fro the oscilloscope that the machine is receiving data on the keyboard interface so I will have to see where that goes and if there's a problem somewhere down the line.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
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stephen_usher
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Re: General Stuff(tm)

Post by stephen_usher »

The keyboard data is getting to the SIO chip.

Of course the questions now are, is it the correct data and is the SIO chip working?
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
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rubber_jonnie
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Re: General Stuff(tm)

Post by rubber_jonnie »

stephen_usher wrote: Sat Feb 10, 2024 12:37 pm The keyboard data is getting to the SIO chip.

Of course the questions now are, is it the correct data and is the SIO chip working?
It's not a foam and foil conductive pad keyboard is it? They are notorious for failing over time.
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
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stephen_usher
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Re: General Stuff(tm)

Post by stephen_usher »

It wouldn't be sending data to the computer if the key switches weren't working.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
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stephen_usher
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Joined: Mon Nov 13, 2017 7:19 pm
Location: Oxford, UK.
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Re: General Stuff(tm)

Post by stephen_usher »

The keyboard is sending out ASCII values for the key presses, so that's fine.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
User avatar
stephen_usher
Posts: 5391
Joined: Mon Nov 13, 2017 7:19 pm
Location: Oxford, UK.
Contact:

Re: General Stuff(tm)

Post by stephen_usher »

I found an image which did a DIR listing at boot:

IMG_3572.jpeg
IMG_3572.jpeg (181.08 KiB) Viewed 123 times

All good on the display side except the deflection coils could do with rotating a little bit as the image isn't horizontal.

Wrote the data to a real floppy and...

IMG_3573.jpeg
IMG_3573.jpeg (268.38 KiB) Viewed 123 times

It boots faster with a real floppy vs. the Gotek strangely.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
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