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.
Siemens PG750 - a portable 386 PC with a CRT color display ... 
Saturday, February 29, 2020, 01:30 PM
Posted by Administrator
Recently I purchased a portable PC, a Siemens PG750, which was in fact used as a S5 PLC programmer. But regardless of it, it can be used also to play DOS games, at least EGA graphics compatible ones.
This portable device has a Texas Instruments Graphics Adapter (TIGA) named Higraph I, based on a TMS34010 chip. It is very hard to find TIGA compatible software, mostly only ACAD 9 and 10 drivers. But the TIGA card offers higher resolutions similar to a VGA card. So I am still looking for TIGA GEM 3.0 and Windows 3.11 drivers.
The original hard disk drive contained MS-DOS 3.30 and Personal CP/M 2.0 (S5-DOS) - these two OS can be selected after booting of the PC is done:


You can't access the CP/M filesystem (2nd partition) with MS-DOS, but with Concurrent DOS 3.2, I was able to access both partitions at the same time:


The PG750 has originally a combo floppy drive with a 3.5" and a 5.25" floppy. Unfortunately this Canon MD5511 drive was faulty (the 5.25" part). So I replaced it with a modded Gotek drive:


There is no left space for additional drives, because only one 5.25 drive bay can be used:


I didn't find so much additional information about the device itself, it seems to be a bit rare, even the original manual of the PG750-386 can't be downloaded anymore (but still for the 486 CPU version).

Related link points to the manual for the PG750-486.
add comment ( 48 views )   |  permalink   |  related link   |   ( 3 / 1742 )

<<First <Back | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | Next> Last>>