curt@hoptoad.uucp (Curt Mayer) (02/26/91)
If you have an Northstar Advantage model III, on the cpu card there are 9 positions for 16 pin dips. if you stuff these with 150ns 64k dram, and put .47uf bypass caps beside them, you can access the memory via the memory management registers. this gives you 128k of ram, just enough for cpm3. i'm in the middle of a cpm3 port, bios to be posted here. This may take a while, since the disk controller is so bloody stupid. . Does anybody know how to get the Advantage to read soft sector? the 8-16 msdos does it, very slowly. . Does anybody have bios source? . Has anybody seen a ms-dos greater than version 1.25 for this beast? . how about source to io.sys?? drool. 415-387-0217 home (answering droid) curt@hoptoad.UUCP email