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TMst
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Post by TMst »

N/A
Last edited by TMst on Sat Apr 06, 2024 8:51 am, edited 3 times in total.
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Pacman
Posts: 173
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Re: MZ Collection

Post by Pacman »

Hi,

The electronic board is more like an 8-bit output data buffer (74LS244) associated with address decoding (74LS00 and 74LS02).
There is no EPROM so no software to work.
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TMst
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Re: MZ Collection

Post by TMst »

N/A
Last edited by TMst on Sat Apr 06, 2024 8:52 am, edited 1 time in total.
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fitus
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Re: MZ Collection

Post by fitus »

Some kind of ROM disk, probably?
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Pacman
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Re: MZ Collection

Post by Pacman »

To know it would require detailed photos of the double-sided circuit to see what address is used by this card.
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Pacman
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Re: MZ Collection

Post by Pacman »

Is the left electronic board of the first picture (the green PCB) the QD interface?
It looks like it has exactly the same components: LS00, LS02 and LS244.
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TMst
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Re: MZ Collection

Post by TMst »

N/A
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