On Tue, Jan 21, 2014 at 05:04:10PM -0800, Marc Howard wrote:
However when I execute the two word bootstrap for
the RK8E I hear the drive seek once and then stop at location 0031.
Halting at 0031 looks like the code didn't read properly into memory.
Try this with diagpack2.rk05
1000 6743
1001 5201
Start at 1000. The disk should read and the processor stay looping at 1001.
Halt the processor and see what is in memory.
You should have at
30 6741
31 5030
32 0035
If those look ok start the computer running at 31. OS/8 should start.
Are you hitting the init button to clear the registers before trying to
start the bootstrap? The bootstrap just tells the controller to go. It depends
on the registers being set to the default values.
I've also tried a restore with the TC08 but it
never even gets to the point
that the drive gets selected (the SR is 0 on entry).
It has never been tested on real hardware, only with emulator. If your
willing I can work with you to get it running. You did start the PC
program before starting the PDP-8 running? Its the opposite of how you do
restrk05.