GRiDCase 3 |
Manufacturer |
GRiD Systems Corporation |
Processor type |
Intel 80C86 |
Cycle time |
4.77 MHz |
Math coprocessor |
Intel 8087 |
RAM memory |
128 KB (up to 512 KB) |
Ports |
Serial port, Parallel port |
Operating systems |
MS-DOS 2.11, Grid-OS |
Keyboard |
57-keys |
Modem |
1200 bps |
Screen size |
25 lines x 80 columns GPD |
Graphics resolution |
640 x 200 dots |
Dimensions |
11 x 15 x 2,2 inches |
Weight |
12,7 pound |
Power |
Battery 1 hour and AC Adapter |
Internal disk device |
3.5” 720 KB FDD |
Peripherals |
External 3,5″ & 5,25″ FDD, 10MB HDD Optional |
Price, $ (year) |
4350 (1985) |
This was my first laptop. Very powerful for it’s day. Unique in that you used, I think it was a penny to pop opens little panel which exposed 3 eprom sockets the 4th socket held your ram chip and it was soldered in. You would buy software like Lotus 123. Fill out a form and send the unopened software to grid and they would get a license to burn the software onto an eprom and send it back to you. Now since you had 3 eprom sockets that mint that you could have 3 programs loaded on the laptop at the same time. If you needed to run a different program you would turn it off and carefully remove one of the EPROMs and take another eprom chip and pop it in. Now these were not rugged EPROMs. They were the same EPROMs that you would find soldered into a standard socket so you had to be very careful with them. The pins were quite fragile. Back then if you wanted to produce a document, you first had to decide which word processing package gave you the features you needed for the document you were producing. Aston Tate had different capabilities than other word processing software packages. So you ended up with several EPROMs with different software vendors products burnt in. Again these were very fragile so you ended up carrying a small case with foam that held all the burnt in programs. Quite unique.
Do you have power supply output diagram for griscase III ? I am trying to power mine up and NiCads are shot ! And can’t find power supply
My PSU reads 16.25V, 3.7A