Re: A few (more) IIgs questions.

[labelas@hotmail.com (Labelas Enoreth)]

In article <37BCBE09.694C6679@swbell.net>, rubywand@swbell.net wrote:
>      You have a fairly loaded system. The "staggery checkerboard screen"
sounds
> like low voltage at the motherboard possibly combined with voltage spikes.
> Either condition could lead to this sort of crash.
> 
>      The Buggy Power Supply suggested by Supertimer has a good reputation for
> curing such problems. An alternative is to beef up your current power supply's
> leads. Especially on a ROM-01 IIgs, you may also need to add power jumpers for
> a couple Slots on the bottom side to the motherboard.
> 
>      For more about the jumpers and power supply mods see
> http://home.swbell.net/rubywand/Csa2POWER.html .
Well, I fixed the checkerboard with some fiddling, but now there are more
problems...I've been keeping up on them play by play now :P

> 
>  
>  
>      Yes, it is. When reviewing the board for Computist I checked around and
> discovered that even other 4MB card makers regarded it very highly. (As
> Supertimer mentions, it places a relatively light load on your power supply.) 
> Of course, it was also pretty pricey.
> 
>      If you get the board with all 4MB installed (i.e. do not have to hunt for
> the RAM chips), the AE GS-RAM III is probably the best IIgs 4MB expansion
> memory card ever produced.
Cool. I can't imagine wanting to try to find those bizarre chips, I bet it
would be hellish.

> 
>  ....
> > 
> > ECHO Commander. What is the DIN...uh, 5...plug for?
> 
>      Don't know. If it is the _only_ connector, it is likely to be for speaker
> or hi-fi output. If there are other connectors to handle sound output, the
> 5-pin socket may be a serial I/O for connecting to a modem.
> 
>      One clue would be the numbers on the major IC's on the board.
well, I think that there was a cable to hook directly to the IIe-style
speaker pin, but I'll double-check...but what sort of sound output goes on
a DIN connector? Maybe I'm out of it, but...

Here is a description of the card...

Echo� Commander
(big square logo with two rectangles through it)
�1986 Street Electronics Corp
J1-2-pin connection to Speaker
U1-TSP5220CNL QCU8719 6163 (TI logo)
U2-74LS373 PC (stylized f logo)
U3-74LS373 PC (stylized f logo)
U4-PS712 MM74C74N (two zigzags like lightning bolts, parallel)
U5-T74LS02B1 98701 (SGS logo)
U6-705 B B TL084CN (TI logo. Silver IC...(resistor network?))
U7-SM8730 LM380N (two zigzags like lightning bolts, parallel)
5-pin molex connector to DIN-5 connector on rear

Pins 19, 24, 25, 26 on 'front' of card edge. (from left)
Pins 1,2,3,6,9,16-25 on 'back' of card edge (from left)
All others N/C