On Thu, 17 May 2001 18:41:57 GMT, Pete Turnbull wrote:
#On May 16, 21:59, Louis Schulman wrote:
#
#> Well, I just got a fabled but seldom seen Exidy Sorcerer. It has a
#> power supply problem (including the need to be converted back from
220
#> to 110V) but I am working on that.
#
#That should be fairly easy; you just change the transformer
connections
#inside the case. The 110V setting has two primary windings connected
in
#parallel to the mains; for 240V the black/red and black/yellow wire
would
#have been cut at the mains filter and joined together, putting the two
#windings in series.
#
#There weren't different units for the two voltages; Exidy literally
cut the
#wires as I describe above, and joined them together for the European
sales.
#
#If it's been set for the "wrong" voltage, it probably has been set for
the
#wrong vertical sync frequency as well. How you change this depends on
#whether it's a Mark I or Mark 2. If it has three rows of DRAM, or
sockets
#for three rows, it's a Mark 2.
#
#For a Mark I, there are 3 jumper sets on the underside of the PCB,
beside
#the ICs in positions 3B and 4B. The first set is a pair of square
pads
#between the rows of pins of 4B; connect them for 60Hz, or disconnect
them
#for 50Hz. The second set is a group of 3 pads between 4B and 3B. Two
are
#nearer 4B, one is nearer 3B, and they're arranged in an L shape.
Connect
#the middle of the L to the other one near 4B for 60Hz; connect the
middle
#of the L to the one nearer 3B for 50Hz. The last set is the other
side of
#3B; connect the two pads nearest 3B for 60Hz, connect the one nearest
row A
#to the one furthest from 3B for 50Hz.
#
#For a Mark 2, it's easier. There's a 4-pole DIP switch at positin 11A
on
#the top side of the PCB. Switch section 1 off for 60Hz, on for 50Hz.
#
#> The Sorcerer was a contemporary of the Apple II, Commodore Pet and
#> TRS-80 Model 1. It was unique in a number of features, including
its
#> use of an S-100 expansion box. In many respects, it appears to have
#> been inspired by the SOL 20.
#>
#> Info on the web in very sparse. I have nothing but the bare CPU,
and
#> photocopies of some manuals. I would like any info anyone has
#> available, software, manuals, hardware, etc. Will pay good bucks,
or
#> trade from my vast collection of interesting stuff.
#
#I have the BASIC ROMs, the original monitor ROMs, patched (bugfixed)
#monitor ROMs, images of the WP PAC ROMs (anyone got images of the Dev
Pac
#ROMS? Or a WP PAc manual? I used to have all these...). I have both
#Technical Manuals and the Software Manual, the smaller of the two
BASIC
#manuals, the S100 Expansion Unit Technical Manual, notes on the
hardware
#bugs (eg the RS232 misdesign on the Mark I, for which I have a fix),
and
#some expansion options (eg upgrading 32K Mk1 to 48K).
#
#I'm not willing to part with manuals, but I'm happy to lok anything up
for
#you, and the ROM images and my source code is at
#
http://www.dunnington.u-net.com/public/ExidyROMs/
#
#I've also got some games and other software (not much, I'm afraid,
things
#like Breakout, Galaxians, BASIC Toolkit) which aren't on line, but
might be
#available if you can't find anything elsewhere.
#
#I assume you've
found:
#
http://www.trailingedge.com/exidy/
#
http://www.heydon.org/kevan/collection/manufacturer-exidy/sorcerer.html
#
http://www.tardis.ed.ac.uk/~alexios/MACHINE-ROOM/Exidy_Sorcerer.html
#
http://www.lisp.com.au/~michael/exidy/
#
http://utopia.knoware.nl/users/stuurmn/exidys.htm
#
http://www.digidome.nl/exidy.htm
#
#There are some errors in the last two or three pages (for example, it
never
#used a Z80A, and there was never any version but the 2.1MHz), but
still
#useful information.
#
Thanks, Peter. This is very helpful. I had figured out reversing the
serial to parallel wiring, but didn't know about the dip switch
settings. Mind is obviously the Mark 2.
Is there some way I could get copies of the manuals? Also, is there
some way to create a ROM Pack? I really could use the Standard Basic
ROM pack. Assuming I burn the chip, what else is there to the circuit?
Louis
Received on Thu May 17 2001 - 18:55:30 BST