tag
4 posts
Set up 86Box, PCjs, or MartyPC to recreate the 5150's real hardware — 8088 at 4.77 MHz, floppy-only boot, PC DOS — and feel the 1981 constraints.
A source-backed guide to FreeDOS conventional memory, UMBs, the HMA, XMS and EMS, with safe Jemm and Himem configuration and troubleshooting practices.
A forensic guide to DOS TSR residency, interrupt hooks, chaining, INT 28h and InDOS reentrancy, multiplex IDs, memory ownership, safe unloading, and testing.
The history, goals, and real-world use cases behind FreeDOS, the open-source, actively-maintained continuation of the MS-DOS-compatible operating system line.