Building a ZAltair Z80c Computer

CAD Sketches come first! ...

...

...

...

...

...

Building a ZAltair Z80c Computer

...

...

...

...

Building a ZAltair Z80c Computer

...

...

...

...................................................... ...................................................... ...................................................... ...................................................... ...................................................... ...

15A 250V Rocker Switch On/Off Power Socket RED wire = LINE IN . . . . . BLUE wire = NEUTRAL IN . . . . . YELLOW wire = GND .

.

The Mean-Well Power Supplies You need TWO: "RS-25-15" for +15V and -15V Digikey.com or Mouser.com or JameCo.com and ONE: "HRP-75-7.5" for +8V Digikey.com or Mouser.com or JameCo.com

DigiKey.com is one source for the power connectors WM2104-ND 0009503061 Molex CONN RCPT HSG 6POS 3.96MM WM2300CT-ND 0008500105 Molex CONN 18-24AWG CRIMP TIN WM4624-ND 0026604060 Molex CONN HEADER VERT 6POS 3.96MM

.

.

So you bought an Altair 8800c cabinet from Mike Douglas/Farmtek Then got the other recommended boards & Power Supplies etc. .

9-Slot Backplane Manual No components needed other than the S-100 Edge Connectors a jumping the fuse points .

Search criteria "100 pin 2x50 S100 Bus Backplane Pitch Card Edge Connetors" or "card edge connector dual 100" EADC 346-100-520-202 or EADC 346-100-500-204 or EADC 346-100-520-802 or FUPH8010-100MTNE DigiKey.com or Mouser.com

The Mean-Well Power Supplies You need TWO: "RS-25-15" for +15V and -15V Digikey.com or Mouser.com or JameCo.com and ONE: "HRP-75-7.5" for +8V Digikey.com or Mouser.com or JameCo.com

One source for the power connectors

.

Altair 8800c Basic Boards

Altair 8800c Front Panel Interface . . . . .

Reproduction MITS 8080 CPU . . . . .

Martin Eberhard's Altair 8800c 882SIOJP . . . . . SW1 = 00011111 ... SW2= 11011100 ... SW3 = 00000000 ... SW4 = 000100000 ... SW5 = 000100000 J1 = 4-5 ... J2, J3, J4, J5, J6, J7, J8, J9, J10, J11, J12, J13, J14, J15 = OPEN J16 = 1-2 ... J17 = OPEN ... J18 = JUMPER, J19 = OPEN ... J20 = CC/8080 .

Mike Douglas/FarmTek Altair 8800c FDC+ board . . . . . SW3 = 00000111 ... SW1 = 00000000 ... SW2 = 01110000 ... SW4 = 00000000 ... J3 = OPEN .

Inserting the Boards

. . . . .

Altair 8800c Front Panel Interface . . . . .

Reproduction MITS 8080 CPU board . . . . .

Martin Eberhard 88-2SIOJP . . . . .

Mike Douglas FDC+ . . . . .

Run FDC+ Serial Drive Server

FDC+ Serial Drive Server . . . . .

Disk 0 = the CP/M or DOS BOOT .DSK file Disk 1 = Other Program FDD .DSK

Disk 2 = Other Program FDD .DSK Disk 3 = Other Program FDD .DSK . . . . .

Front Panel Power ON & BOOT

Set the Sense Switches as in the photo . . . . . Address FF00 = PROM MONITOR on FDC+ board A15, A14, A13, A12, A11, A10, A9, A8 = UP A7, A6, A5, A4, A3, A2, A1 = DOWN

Switch DOWN to Power ON .

Switch UP to STOP . . . . .

Switch UP to RESET . . . . .

Switch UP to Examine . . . . .

Switch DOWN to RUN .

PC/TeraTerm

Connect Port A from the 88-2SIOJP board to the PC via a RS-232 to USB adapter cable Use the "Device Manager" to identify the COM port used by the RS-232 adapter cable . . . . .

Install and SetUp TeraTerm on your PC < Setup > - < Serial Port > - < Port: > . . . . . Enter the COM Port number from the Device Manger

< Speed: > = 9600 . . . . . < Transmit delay > = 10 and 100 msec/line

After "RUN"ing the BOOT from FFOO . . . . . On the PC/TeraTerm display you will see;

You are at the CP/M Prompt . . . . .

From here you can type DIR or LS to see the files on a drive . . . . .

The command line to run MBASIC from the A: drive and the GALAXY.BAS program on the B: drive . . . . .

Hand Coded Page by Walt Perko