Diagnostics

I’ve downloaded several programs for my Apple II’s and had problems with them.  They seem to run fine on AppleWin, but when I try to run them on the Apple II’s I have problems.

I figured it was time to troubleshoot the problem.  I started with the //c, since I’m more familiar with it.  As I had it set up, there were too many variables.  I disconnected everything except the TV which I use as a monitor.

Diagnostics for the //c seemed like a good place to start.

I booted it up and the first menu choice is Rom Test, which again seemed like a good place to start. Rom’s D0, D8, E0, E8, F0, and F8 all checked out.

The next logical test looked like the Ram Tests. Motherboard Ram Auto First, 800.FFF, 1000.1FFF, 2000.3FFF, 3000.4FFF, 4000.7FFF, 7000.7FFF, D000.DFFF, E000.EFFF, and F000.F800, which is where the program appears to stop.

After rebooting, Auxiliary Ram Auto was next, 800.FFF, 1000.1FFF, 2000.3FFF, 3000.4FFF, 4000.7FFF, 7000.7FFF, D000.DFFF, E000.EFFF, and F000.F800, also appears to stop here.

 YoYo Duck Diagnostics Version 2.5

14) Memory Test for a //c 128k. This test tells you to use the on board software to test the memory. It says to press and hold the Solid Apple-Control-Reset and release the reset key first. This had no result and after several tries, I added the Open Apple to the mix (Open Apple-Solid Apple-Control-Reset) and the screen changed to a grid that looked like a patch work quilt and after a bit flickered and said System OK

 Computer Inspector from MECC

1) Machine Identification notes that this is an: Apple //c version 3 with 128K of memory.

5) RAM Memory Test tested both the Main and Auxiliary memory and said OK.

4) Disk Drive Test

1) Drive Speed for Slot 6 Drive 1 reports a drive speed of 299 RPM which is within the range of 296 to 302 the program says is satisfactory.

2) General Operation indicates the diskette drive seems to be functioning properly.

Computer Checkup by Power Up Version A:01

A) Main Memory ran more than 126 passes without finding any errors.

B System Roms failed completely, my thinking is this program proceeds these roms, as Version 3 Roms were a later version.

C) CPU test ran more than 16,000 passes without finding an error.

L) Drive Speed says correct speed is 299.0 to 301.0 and shows it testing between 299.6 and 300.3.

D) Disk System Tests ran for 64 passes with no Speed, Seek, Read or Write errors.

H) Auxiliary Memory, I let run for over 118 passes with no errors.

At this point I can not find anything wrong with the basic system. I’ve hooked up the external drives and see about checking it out.