Ethan Dicks wrote:
--- Philip Pemberton <philpem(a)dsl.pipex.com>
wrote:
Hi,
Well, it looks like the deadbeat seller who was supposed to be
selling me the HN462532 EPROMs has vanished...
Ow! That sucks.
Indeed it
does...
I have a quantity of used 2732s available, but you
will probably be
happier with 2532s (less work). They are available from BG Micro for
$2 each...
http://bgm.bgmicro.com/prodinfo.asp?sid=0693784722222222242105076&prodi…
2532&page=1&cri=2532&stype=3
Complete with a $15 shipping charge. Oh, *great*. This just keeps on getting
better.
BTW, does anyone know what the current consumption of a "raw" Jupiter Ace
is? Mine's drawing about 700mA from the mains PSU. I've repaired a load of
PCB tracks and pads with 30AWG wirewrap wire and I've succeeded in getting a
constant display. It does alternate in some areas, but the chip select out
pin on the LS138 (the one that goes to the video RAMs) is pulsing, so I
guess that's normal. The machine demonstrates no reaction whatsoever to
keyboard input. Grr... If this continues, I'm going to raid what little I've
saved up for a new monitor and use it to fix this annoying machine. I shall
not be beaten by a chunk of fiberglass, copper, silicon and plastic! I still
need five case locking pins though. Anyone got a dead Ace (I'm thinking
cooked tracks or cascade failure) that has a full complement of case pins.
If all else fails I'll add a pack of 3mm nylon bolts to my Farnell order...
Later.
--
Phil.
philpem(a)dsl.pipex.com
http://www.philpem.dsl.pipex.com/