4 Jun
2011
4 Jun
'11
10:54 a.m.
If you have the information, can you describe the
circuits that were soldered and the size of the
resistors? In addition, would Tony (I guess this
is twice that I have taken your name in vain -
I apologize) be able to suggest the additional
circuits needed to add the green and orange
LEDs to show the same status that the 6 button
front panel for the BA23 shows?
Assumeing the circuits on Pete's web page are accurate, it should be
quite easy to do this.
Are the 4-button and 6-button panels base o nthe same PCB, with the
former being partially populated, or are they different PCBs?
(a) The lines (probably 5 and 6) from the 10 pin cable
which control READY and READ ONLY on drive 2
are not handled at all on the 4 button panel
(b) The 4 button panel has 2 LEDs (in the same position
as the extra 2 switches on the 6 button panel) which
display READ ONLY for the floppy diskette on the
RX50 drives (detects when the WRITE PROTECT
sticky tab is placed on the media).
RIght...
If possible, it would also be "nice" to have those 2 extra
LEDs for the floppy drives displayed on the 6 button
panel (or at least added somehow).
I assume that's possible too.
The reason I am reluctant to powst detailed information at this point is
that I normally only post modifications, etc, that I've done myself and
thus know can work (no, I cna't prove they always work, but at least I
know they've worked once). Similarly any repair methods I mention are
ones that I've used.
I know vry little abotu the BA23 and related bits, I have no real
experiece of working on them (I'm more of a Unibus person :-)).
Therefore, I'dwant to get my BA23 onto the bench and test things before
saying 'Oh, connect an LED nd resistor here, a switch here', etc.
-tony