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Forum Index : Microcontroller and PC projects : Why we're all old farts

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Tinine
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Joined: 30/03/2016
Location: United Kingdom
Posts: 1646

Posted: 10:49pm 22 Dec 2022

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Heck, I had to troubleshoot an ancient Heidenhain CNC today. OMG, what those guys achieved with a TMS9995 and virtually nothing for RAM/ROM. I am in awe of this thing.

No OS-BS, just incredibly efficient bare-metal programming.

The kind of stuff that only we old guys can appreciate.

0.005mm positioning all day long

Craig

Volhout
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Joined: 05/03/2018
Location: Netherlands
Posts: 5090

Posted: 08:09am 23 Dec 2022

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The TMS9995 was hindered by it's 8 bit databus (being a 16 bit processor), similar the Intel 8088. But as long as it uses internal RAM (256bytes) only it was pretty fast.

Volhout
Edited 2022-12-23 18:10 by Volhout

PicomiteVGA PETSCII ROBOTS

Tinine
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Joined: 30/03/2016
Location: United Kingdom
Posts: 1646

Posted: 09:16am 23 Dec 2022

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Volhout said The TMS9995 was hindered by it's 8 bit databus (being a 16 bit processor), similar the Intel 8088. But as long as it uses internal RAM (256bytes) only it was pretty fast.

Volhout

I thought that it was the opposite; that its 16bit bus was the hinderance due to lack of peripherals and hence, IBM picked the 8088 for its 8bit bus?

Craig

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