8089 was Re: Hyperion Passport, Apricot, Convergent Technologies workSlate,

From: Joe <rigdonj_at_intellistar.net>
Date: Thu Dec 30 21:49:09 1999

At 04:53 PM 12/30/99 -0700, Richard wrote:

>Well ... that i8089 has to be a slave processor to something else.

  It is. It has a 8086 for the main CPU. A 8088 to handle the keyboard,
CRT and RS-232 communications and a 8059 for something else.

>
>The notion of CP/M for something other than the "BIG-3" i.e. 8080/8085/Z-80,
>seems unnatural to me. I you can find an OS that actually uses that i8089,
>I'll be surprised, but really interested.

   I have one. It's CPM-86 and it's up and running.

 I've got one on an Intel iSBC215
>"Versatile Hard Disk Controller" intended for goodness knows what, which I
>mistakenly bought back in the early '80's, thinking it would do something
>"wonderful" and worthy of study since it was so expensive. -Not so! -
>
>The 11-bit bit banks in those memories are halves of 22-bit words which are
>SECDED compatible for 16-bit words of data. Intel made a chipset to
>accomplish just that and it's probably the set on your board(s).

   The ECC memory controller is a 8206. It also has a 8203 DRAM controller.
 This thing is full of Intel chips, it has a 8288 bus controller, a 8259
arbitration control chip and a 8284 clock generator just to name a few.

    Joe
Received on Thu Dec 30 1999 - 21:49:09 GMT