I can only say that I'm always looking for Unix-like systems. I've been trying to get a Tandy 6000 or TRS-16 for years. Maybe someday...
Regards Sergio 2017-04-26 13:51 GMT+02:00 Bill Gunshannon via cctalk <[email protected] >: > > ________________________________________ > From: cctalk [[email protected]] on behalf of Peter Cetinski > via cctalk [[email protected]] > Sent: Tuesday, April 25, 2017 10:47 PM > To: Jim Brain > Cc: General Discussion: On-Topic and Off-Topic Posts > Subject: Re: TRS-80 Model 12 versus 16B > > The Model 16 was introduced in 1982 and was an upgraded Model II with the > addition of an MC68000 subsystem that allowed you to run 16bit OSes, like > TRSDOS-16, CPM-68K and TRSXENIX 1.x. On all Tandy 68K machines and > operating systems the z80 ran in concert with the 68k. The z80 handled all > I/O as the 68k subsystem did not have direct access to any I/O ports. The > 2 CPUs would talk through shared memory and interrupts. The Model 16 also > had the first appearance of the TM-848 thin line drives, white case and > superior green screen CRT. > > The Model 12 was introduced in 1983 as the next version of the Model II. > It was considered the base Tandy business system. The case dimensions were > somewhat larger than the previous II/16. It had a simplified architecture > in that the entire Z80 system was now on a single main board instead of the > 4 separate cards of the Model II. A base Model 12 has a lot of empty space > inside as it was meant to be optionally upgraded with the card cage if you > needed a hard drive or 68K functionality. It also had the new lower > profile keyboard with reverse gender connector compared to the II/16. > > The 16B released around 1984 is essentially a factory upgraded Model 12 > with the card cage and the 6Mhz MC68000 subsystem consisting of a CPU card > and 1 or more 16 bit memory cards. The 16B for a time was the best selling > Unix workstation in the world. > > The 6000 released in 1985 was a slightly enhanced 16B with the biggest > difference being the upgrade to an 8Mhz MC68000. This system allowed you > to run XENIX 3.x and address up to 1MB of RAM. > > _____________________________________ > > You missed the addition of cards with three serial ports each and multiple > ones > could be installed limited only by the space in the card cage. I ran a > BBS connected > to the Sytek Serial Network boxes at USMA for a while as a user interface > to local > and USENET groups. It was fun. Oh yeah, My later employer got their > first Model 16 > in 1981. Documentatioin was all xeroxes and the Xenix documentation > refered heavily > to the Intel architecture. :-) It went home with me when they stopped > pushing them > to the government as it went on the GSA List and they no longer nbeeded a > contractor > to sell them one. Don't remember who got it, but it might be in > Pittsburgh now. > > bill >
