I'm trying to document the PC/4000 and PC/5000 handheld computers made by Micro Palm Computers in the late 80s. These are computers with 80C88 running MS-DOS (ROM) 2.25.
I have a YouTube playlist of videos covering them
here.
They have a pair of VLSI type chips that I assume cram a lot of functionality into them but I've not been able to identify exactly what they are.
The company is "PPS, Inc." which I've not been able to find, and were manufactured in Hong Kong.
I'm assuming the actual part ID is "L1A2710" and the "customisation" ID is GA00001.
The chip measures 24mm square with 17 pins per side, 68 pins in total.
The second chip is larger (29mm square), has 21 pins per side (84 pins in total), has "L1A2711" as a possible part ID and GA00002 as the customisation ID.
Oh ... and if anyone can
provide ANY information about Micro Palm Computers or their computers, that would also be a massive help!
Thanks!