User`s guide

Special Note: The slot that the SpeeDemon card resides in should be set to
the "Off" position
____________________________
From: Will Baguhn
009- How can I get a 'Cache Hit' indicator for my ZipGSx?
This latest ZipGSx modification is pretty straightforward. When I decided I
wanted a Cache HIT light instead of a Cache MISS light, I went to Rat Shack and
bought a pack of Green LEDs (I like green. Blue or Orange will work just as
well.)
I tried adding an inverter to the circuit but it just didn't want to play
(obviously a cache HIT is the opposite of a cache MISS, and the LED on the board
lights up for cache MISSes). Through the experimenting, I found that I could
get the LED to light as desired without any "extra" hardware except the LED
itself.
Simple mod: solder in the Anode of the LED to the Anode of the Cache Miss.
Solder the Cathode to the Cathode of the Power LED.
(Even easier way to say it: there are four solder points for the existing LEDs.
We use the two in the middle. The long lead goes to the yellow side, the short
to the red. position as is comfortable. I can only guess that this would be a
nice thing to attach to the TURBO light on the front of a tower case, should
anyone ever mount a IIgs/ZipGSX inside a tower case... (also, it might be nice
to turn SW1-6 OFF and connect the pins to the TURBO button on front. I don't
know how useful it would be, but it m
ight come in handy one of these days...)
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From: David Empson
010- How can I program the ZipGSx registers?
ZipChip GS Special Registers Ex ZIP Technology, 12 October 1990
Registers must be unlocked before they can be accessed (see $C05A). Locking
them will re-enable the annunciators.
Writing to any I/O location $C058-$C05F (whether registers are locked or
unlocked) will reset delay in progress.
$C058 R No operation
$C058 W Write any value to force power-on/reset bit to COLD (forces
next reset to restore ZIP registers to defaults/switch settings).
$C059 R/W 76543210
*....... Bank Switch Lang Card cache disable=1/enable=0?
.*...... Padl delay (5 ms) disable=0/enable=1 $C070/$C020
..*..... External delay (5 ms) disable=0/enable=1
...*.... Cntr delay (5 ms) disable=0/enable=1 $C02E/$C07E