1987 vintage. I have this one in beautiful condition, although batteries =
may be tired.
Taht's a curious commnet. The battery for the PPC640 is 10 C cells
(primary cells, not rechargeble) in 2 plastic tubes that fit int oteh
bottom fo the machine. You could also power it from a car battery, a 15V
(or so) mains adapter, or the monitor of an Amstrad PC1512.
Does anyone out there have a functioning system disk
for its drive A? =
The ones I have are duff or not the correct type of disk - difficult to =
tell. DOS 3.3 is the revision of DOS required.=20
It is a plain MS-DOS boot disk, and MS-DOS 3.3 is fine. But it has to be
a double desniry (720K) disk, bot a high desniry (1.44M ) one. This is
an XT class machine and doesn't handle 500kbs data rates.
 Yes, I know that's a pretty daft definiton of megabyte, but it's what
they're generally called.
FWIW, I have a working one here, not inbrilliant cosmetic condtion, along
with the techncial (programming info) and service (scehamtics) manuals. I
still use it. It runs a thing called a 'microtest' which is a floppy
drive alignment tool. My PPC only has one internal floppy drive, I
mounted a DC37 connector in the other drive bay o nteh side of the
machine to connect to the drive under test.