23 Oct
1998
23 Oct
'98
6:33 a.m.
Note: on the
Model II (TRS-80) there was an option to use page the memory
so you could get more than 64K in the thing.... If I remember, it used a
Z-80 I/O address as the pager.
To the best of my recollection, the only serious memory paging that Tandy ever did with the Model II series was the 16k
(each) in the
Arcnet and hard disk boards and the 32k in the graphics board. Some
other vendors went further with it, but as a Tandy customer support
rep, I never saw them in person. The Model 4 was a different story.
No seriously, the Model II can page (I think it was the upper) 32K of
memory IF you had extra memory cards. This feature is built in.
Damnit! I
want a 64bit Model II !!!!!!!! (Running and 500Gcyc of-course).
With 8" Laser-Optical drives... and OH OH!!! I want a Thomas-Conrad
100Mbps Fiber ARCnet to connect it to my Linux machines!!!!
Won't do you any good unless you also build (and program) the
custom Arcnet cards, since Model II Arcnet spoke only to Model II
Arcnet, even though the hardware and connection layers were
compatible with Datapoint and (later on) PC Arcnet systems.
I installed and supported Model II Arcnet, later on I installed
Vianet based on Arcnet hardware for PCs. The wires and hubs and
signals were the same, but the machines talked different languages.