Hello! smf wrote: > Or instead of booting MSDOS 3.3, try to get Digitals Concurrent DOS 3.2 > / 4.11 / DOS plus running. Which can run MSDOS and CPM86 programs. Over the weekend, I made a D80 disk from DOS Plus 1.2 image and tried it with the machine. The boot sector loads, displays the text "Loading DOSPLUS.SYS" followed by a series of dots, then hangs. The debug trace of called interrupts shows that the whole DOSPLUS.SYS file is loaded, then apparently it tries to boot and dies somewhere in the process - the last interrupts called are INT 11 (get configuration information) and INT 13/0880 (get hard disk geometry). The good thing - the disassembly of the DOS Plus PC XIOS can be found on the Internet. The bad thing - I looked cursorily through the disassembly and noted that there is lots of I/O ports accessed, PC keyboard interrupt is hooked etc, and also it accesses video memory directly at B000 or B800. So it will not work on the CBM-II without a major rewrite (probably writing most parts from the scratch) - I am not sure if there is enough interest/demand to do that? Regards, Michau. Message was sent through the cbm-hackers mailing listReceived on 2018-02-20 15:00:04
Archive generated by hypermail 2.2.0.