It could run LDOS TRS-80 software three times faster. Nevertheless numerous internal differences made it incompatible as far as hardware was concerned: serial and parallel ports, disk interface and no tape connector.
The system also ran CP/M operating system. the early versions were
shipped with 2.2 version, next ones with version 3. It could accept any 5" or 8" disk units of any capacity, including the new and rare (at that time) Sony 3.5" units.
More information by Clarence Perry:
I purchased a Max 80 in 83 with LDOS. The Max 80 did not have a boot rom like the TRS80. It was basically a CPM machine which didn't require much in ROM and loaded everything from disk.
LDOS for the MAX 80 had a version of the model 1 basic rom as a disk file which had to be loaded into low memory during boot. My hat is off to the guys who wrote & documented LDOS because it still stands as one of the finest pieces of computer documentation I have seen.
I did some assembler work on the Max80. I posted a task switcher on Compuserve that switched between different LDOS sessions running different applications with a key combination. The source was there also. It was pretty easy to do due to the memory arrangement. That was also enough of a taste to decide I never again wanted to do assembler.
Lobo Drives International
BUILT IN LANGUAGE
Full-stroke 76 keys with numeric keypad
64 KB expandable to 128 KB
64 columns x 16 or 32 lines for TRS-80 mode 80 columns x 25 lines for CP/M mode (or a special LDOS mode)
SIZE / WEIGHT
F.D.D. interface (3.5'', 5.25'' and 8''), H.D.D. interface (ST-406/512), Parallel Centronics, 2 x Serial RS-232C
LDOS 5.3.1, CP/M-80 version 2.2 (60K) and 3 (CP/M Plus)