[comp.sys.m6809] coco 1, memory

gto@neoucom.UUCP (Thomas Osterfield) (03/01/89)

My  CoCo  is an old gray box -- the bubble says it's 32K, and the
person I got it from gave no indication  it  was  anything  else.
The  diagnostics  program  says I have 16K, but the documentation
with the program doesn't seem to recognize any larger memory.  On
a  small  sample  text file, color disk scripsit says I have over
17500 memory left; that sounds about right, I guess.  But, on the
same  file,  tsedit  says  I  have  over 47500 memory left.  Does
tsedit  not  recognize  anything  smaller  than  64K?  Or  is  it
possible, that, without great effort or expense, I could make use
of software requiring 64K?  Specifically, should I watch for sale
prices on the deskmate or level 1 OS9?


-- 
G. Thomas Osterfield        archivist       (216)325-2511 ext 531
gto@neoucom.UUCP  {cwjcc,hal,scooter}!neoucom!gto  CIS:74106,1153

phaedrus@flatline.UUCP (james hartman) (03/02/89)

In article <1522@neoucom.UUCP>, gto@neoucom.UUCP (Thomas Osterfield) writes:
> 
> My  CoCo  is an old gray box -- the bubble says it's 32K, and the
> person I got it from gave no indication  it  was  anything  else.
> The  diagnostics  program  says I have 16K, but the documentation
> with the program doesn't seem to recognize any larger memory.  On
> a  small  sample  text file, color disk scripsit says I have over
> 17500 memory left; that sounds about right, I guess.  But, on the
> same  file,  tsedit  says  I  have  over 47500 memory left.  Does
> tsedit  not  recognize  anything  smaller  than  64K?  Or  is  it
> possible, that, without great effort or expense, I could make use
> of software requiring 64K?  Specifically, should I watch for sale
> prices on the deskmate or level 1 OS9?

THe answer to your question is as follows:

Yes, you have 64K on your CoCo 1.  However, BASIC and RS-DOS cannot
access the entire 64K at once, since the ROMs are mapped into the upper
32K whenever you're in BASIC.  TSEDIT (apparently, since I've never used
it under RS-DOS) is able to use the entire 64K by switching out the ROMs
and using its own routines (rather than using the ROM routines like SCRIPSIT
does).  Level 1 OS-9 is sort of hard to find, but it still can be bought,
especially if your local Rat Shack has a tent sale.  You shouldn't pay any
more than about $20 for it (the going rate the last time I saw it).


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