First post, by carlostex
- Rank
- l33t
So i got a Tandy 1000 SL motherboard. I got it on an impulse, i threw an offer and the seller accepted.
The Tandy 1000 model i really wanted is a TL/3. Reason being i wanted a 286 system and i don't want to just build a generic one. A TL/3 at 10MHz would provide a decent mid ground between my 12MHz V20 and my 386. Unfortunately TL/3's seem to be hard to find so i'd be happy with a TL or TL/2. I think even a TX would be nice.
So i don't know what i'm gonna do yet. i'll probably try to get a TL along the road, but getting a system with case would just cost a crazy amount of money to ship.
So living in Europe and owning a Tandy 1000 raises a few questions. Powering it up won't be that difficult. I'm gonna use an AT PSU, all i need to do is to change P8 connector, get rid of the -5V line and move the +5V pin to where the -5V was. This way i can connect pin 2 of the P8 connector to pin 1 of the power connector on the board and i'll have proper voltages from pin 1 to 5:
1- +5V
2- +5V
3- +5V
4- GND
5- GND
For the remaining 4 pins on the motherboard connector i can use pin 1 to pin 4 on the P9 connector of the PSU. That way i'll have:
6- GND
7- GND
8- -12V
9- +12V
Now the question is... Where am i going to put this motherboard? Considering it is not a generic XT or AT board i can't just simply put it inside a normal XT or AT case.
So ithought about making a wooden case. That way i can have an AT/ATX PSU installed and make it work. I'll also adapt for the sattelite boards. Then i just need to figure out about floppy drives to use.
And of course the video.There are now DAC's that can convert IBM CGA to a 15KHz analog RGB signal. It's all a matter of getting a 15KHz monitor or using a gonbes upscaler.