Peter's z80.eu site blog
Search 

Please read ! 
If NO IMAGES will be shown, use www.z80.eu/blog instead of blog.z80.eu

Please note also - THIS BLOG ENDS HERE WITH THE LAST ENTRY FROM NOVEMBER 9th 2021.

I have prepared a new blog with wordpress at https://vintagecomputing.info !!!

Thank you.
Rare CPU: IBM 386SLC , similar to an Intel 386SX, but with 8KB cache ... 
Sunday, April 24, 2016, 02:45 PM
Posted by Administrator
IBM introduced a meanwhile very rare CPU in 1992, starting with IBM PS/2 models and also with PS/Valuepoint computers.
This CPU was an attempt to create a cheap but for its price powerful CPU, which can even used as an Upgrade for Intel 286-based AT machines.

You can't read much about the ability of the CPU, the Wikipedia entry isn't very detailed.
I got a PS/Valuepoint 325T, which has such a CPU. But even the BIOS of the machine does not offer any option for enabling or disabling that level 2 cache.
The CPU is *NOT* Cyrix CPU compatible.

I've found an utility named CTCHIPZ (last version "34") and tried the "IBM486.CFG" to change the processor operation register. This doesn't work obviously, see the picture, although I was able to show the register values...


Still looking for more infos, if anybody has them, try to contact me please.

add comment ( 393 views )   |  permalink   |  related link   |   ( 3 / 2457 )

<<First <Back | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | Next> Last>>