Grid 1520

Climbing back through the cobwebs, I find some information. The 1520 was still when GRiD was making them out of magnesium. The flap just above the keyboard was for EPROMS. On those EPROMS you could store DOS files, as big as the memories could hold. I used them in 27010's. Depending on how many sockets there were, you could even split bigger files across more than one EPROM. GRiD had a program called ROMBUILD that would take the files you feed it and create ROM images to burn into the ROM's you would then plug into those slots. You could make the ROM's into bootable devices as well, using ROMBUILD. I sent that program to someone who put it online in the Yahoo group for Grid computers. So you should be able to get it, along with a scanned copy of the typewritten instructions on how to use it. There were several versions of the Gridcase, from 8086 versions through 386SX versions. By the time the 486 came about Grid was making more conventional looking plastic laptops and soon after that was sold to Tandy. The 1520 should boot from a floppy or its internal hard drive. If it powers up but doesn't access the floppy drive, try hitting the "F" key right after the BIOS <beep> on powerup. Good luck. The Gridcase was a very cool computer. Lots of military use. And where I work, DaimlerChrysler Engineering, we used lots of them in vehicles because of their ruggedness. Brian Mahoney wrote: