Ok the computer is really starting to take shape. So, the schematics for the ALU ARE DONE!!! and will upload them in a pdf. The accumulator is also done but the main processor...well....lets just say i needs to be checked first.

If someone could check it for me the just send me a message by this forum or :

kiwisoftware@hotmail.co.uk

the code is as follows:

0000 - add (adds two numbers and stores in accumulator)
0001 - adm (adds number...

I have completly redesigned the ALU after discovering i need decoupling capacators and open collectors. I am using the Eagle software to draw the schematics and convert to PCB, man....I have never used such a brilliant program for auto-routing. This thing can route ANYTHING!!!

Well I have finished the ALU design and just need to implement this to a PCB. Instead of the traditional "everything on one board" I have designed mini boards that fit in a mini shelf (i mean really small). This way its easier to find a problem and fix.

Design:
Voltage Peak detector

1. Vcc = 12v.

2. Choose VCQ1 output, = 9v.

3. Choose VBQ1 = 8v.

4. VEQ1 = 7.3v.

5. choose RCQ1 = 470 ohms. (to drive a LED output)

6. IRCQ1 = (Vcc - VCQ1) / RCQ1 = ~ 6.38 mA.

7. RE is a split resistance, between the emitter of Q1 and Q2.
RE = ( REQ1 + REQ2) = (VEQ1 / IRCQ1) = ~ 1143 ohms.
So make REQ1 = REQ2 = 560 ohms each.

8. Now VEQ2 =...

This section will encompase basic circuits people might use. If a schematic is found to be flawed, it will be repaired or removed.