[Techtoolslist] 9100 Video display

[martin at guddler.co.uk]

Thanks Andy,

Just to rig it up and see what's what I can use my 10" MTC9000 then  
and use the syncs as they are since it's got the sync polarity switch  
on it. Longer term that'll be a bit of a pain though so I guess I can  
invert them. I had flicked through the service manual but it's a bit  
vague in places and I wasn't sure if the video signals were TTL or  
anything.

On the memory, it's already got 4MB of ram in it. Although I haven't  
bothered to look yet I guess it's 4 x 1MB simms. Every other of the 8  
slots is free. I'll see how I get on for now but yes, it may be worth  
experimenting later to see if it can go up to 8MB :)

Don't suppose you or anyone else have a spare set of manuals available  
for purchase? I do hate working off of computer screens!

Cheers,
Martin.


On 18 Feb 2008, at 16:48, Andy Welburn wrote:


> The video card can output B/W or color, this is set by the jumpers  

> on the vidocard itself. Grab the service manual and look at the  

> schem for the video card to work out what the jumpers should be (i  

> haven't made a note of this unfortunately) but its obvious from the  

> schems.

>

> I've seen docs that say the video is 'IBM CGA compatible'... it is  

> true that it is low-res 15hz, it has seperate syncs, and they're  

> inverted, so invert them then combine them in order to run it on an  

> arcade monitor...

>

> I have tested working 30pin 1MB RAM simms if you want to beef yours  

> up, one assumes you can give it 8mb ram with the right dip  

> settings... 9100's only have 4 slots, and 4mb max ram.

>

> Andy

>

> ----- Original Message ----- From: <martin at guddler.co.uk>

> To: "Technical Tools Mail List" <techtoolslist at flippers.com>

> Sent: Saturday, February 16, 2008 1:11 AM

> Subject: [Techtoolslist] 9100 Video display

>

>

>> Hi,

>>

>> Can anyone give me a clue on how to connect a monitor up to the  

>> 9100FT please? I have a B/W composite video monitor available to me  

>> (Tandy TRS-80 monitor), or of course a standard arcade monitor (10"  

>> MTC9000).  Is it a simple case of wiring up the RGB and sync pins  

>> from the 9 pin  d connector on the back to the arcade monitor or is  

>> there more to it  than that?

>>

>> I don't know if the video card in this unit is B/W or Colour, or if  

>> indeed there is a difference. Do they all do both?

>>

>> And does anyone have any documentation specifically on the FT? Is   

>> there anything that says what the specific differences are beyond  

>> the  HD floppy and the faster processor? There's 8 memory sockets  

>> for  instance. Is that normal on all 9100's?

>>

>> Thanks,

>> Martin.

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>

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