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Re: SVN builds - new driver flood [Re: Just Desserts] #117786 09/06/20 02:26 AM
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R. Belmont Offline
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Originally Posted by Just Desserts
The M6803 in the keyboard bit-bangs serial over to the M6803 in the "TDS box".
The M6803 in the TDS box hands bytes over to a SCN2681 DUART in the same box.
The DUART in the TDS box sends serial over to a 6850 ACIA in the computer crate.
The M68000 in the computer crate reads bytes from the 6850 ACIA and puts them on-screen.

You can't explain that.


That is some quality Rube Goldberg engineering.

Re: SVN builds - new driver flood [Re: Anna Wu] #117812 09/10/20 11:55 AM
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Duke Offline
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Informer 207/376 with redumped chargen ROM:

[Linked Image from zippyimage.com]

Informer 213AE:

[Linked Image from zippyimage.com]

This one has an ASIC controlling many aspects. I couldn't identify yet where it reads/writes the keyboard and SCC.


Last edited by Duke; 09/10/20 11:55 AM.
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