Pocket Computer PC-2 Questions

[ti994ageek1970]

I recently acquired a TRS-80 PC-2 Pocket Computer and cassette interface in good shape and it appears to be functioning correctly.  The LCD screen works well and it appears to switch modes from PRO to RUN correctly.  The computer also has an 8k expansion card in it and when I type MEM it typically reports that there is 24576 memory free.  I am new to this line of pocket computers and have a few questions that I cant seem to resolve.  Like I mentioned, the computer was reporting around 24576 memory but now only says 0.  I have removed the batteries, push the reset button etc. but it continues to show 0 for memory and I do not know how to correct this or if I am just unaware of what to do?

 

Also, even when it was showing the higher amount of memory available, I would switch to PRO mode to key in BASIC commands but it never seems to retain them.  I would key in the line numbers with simple commands such as 10 PRINT "A" and then I would hit enter which should have placed the line in memory but it does not.  I switch to RUN mode and type RUN but nothing happens.  In PRO mode I try to use LIST or the up and down arrows to see the line numbers but nothing shows.  Just curious if anyone can shed some light on these issues or have experienced them.  Any comments are greatly appreciated.

[Michael Kline]

The PC-2 will show a base mem count of 1850 and with the 8K module installed; 10042.

 

Take the 8K module out, (with the power off), turn back on, clear the screen and type "NEW0" (zero). Then just "NEW" for good measure. See if it reads 1850 when you type MEM. If it does, then turn back off, reinsert the 8K module back in and follow the same procedure. See if you get 10042. Other results will indicate if you have bad base memory, and/or a bad 8K module.

[Michael Kline]

BTW:

 

If you are looking for docs and/or software for your computer, there is an archive site up at: http://www.pc1500.com/