🚀 go-pugleaf

Hunter1 <hunter1@arach.net.au> wrote in news:3fce122c$1
@funnel.arach.net.au:

> Phred wrote:
> Yeck... Had a model I then a model IV, a glorified model III 
> with 64K of RAM from memory (quite a jump from the original 
> 16K in the model I)that ran CPM in model 4 mode (but then I 
> think the II did too) which both ran on 5 & 1/4s.

CP/M. Oh yea. I wrote income tax preparation verification software on a 
Model II under CP/M.  The client actually ran it on Apple II's under 
CP/M. Before you ask, the software took in figures read by a preparer 
over the phone, the calculations were performed and the preparer would 
state the refund or tax due.  The operator would say "RIGHT" or "WRONG" 
and hang up. The third time through the preparer could call a supervisor 
would could pull up the line by line display and review the return.  No 
forms printing here.

My first "cross platform" experience.

<snip> 
> I went from TRSDOS to NEWDOS and that was a major leap, 
> never bothered to play with any of the other TRS80 OS's.

We did not pick LDOS. The external hard drive manufacturer had drivers 
for LDOS and that is what we used. LDOS only supported 4 drive numbers 
(not letters) and had to boot from a floppy.  I wrote some utilities that 
would boot, determine the HD geometry, load the first driver, and 
configure all of the driver control blocks to replace both floppies and 
both HD slots with external HD partitions. Each partition was a max of 5 
megabytes so I had 4 partitions on a 20 meg drive. That is a tone of room 
on a Model 4.

-- 
ATB

Charles Kincaid