California Computer Systems 64K DynamicMemory Model 2065 – Non-working

Board is being offered for sale inAS-IS and AS-Pictured condition.

Measured Voltages

-5V(VBB) at memory chips reads -4.93V

+12(VDD) at memory chips reads +11.89V

+5V(VCC) at memory chips reads +5.05V

Banksat 0000H, 4000H, 8000H respond pretty well to Fill commands. Didn'tcheck Bank 3.

>f0,3f,0

>d0,3f

0000 22 22 22 22 22 22 22 22 22 22 22 22 22 22 22 22

0010 22 22 22 22 22 22 22 22 22 22 22 22 22 22 22 22

0020 22 22 22 22 22 22 22 22 22 22 22 22 22 22 22 22

0030 22 22 22 22 22 22 22 22 22 22 22 22 22 22 22 22

>f0,3f,ff

>d0,3f

0000 7F 7F FF FF 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F

0010 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F FF FF FF

0020 7F 7F 7F 7F 7F 7F 7F FF 7F 7F 7F FF FF FF FF FF

0030 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7E 7F FF

>f4000,403f,0

>d4000,403f

4000 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02

4010 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02

4020 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02

4030 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02

>f4000,403f,ff

>d4000,403f

4000 BF BF BF BF BF BF BF BF BF BF BF BF BF BF BF BF

4010 BF BF BF BF BF BF BF BF BF BF BF BF BF BF BF BF

4020 BF BF BF BF BF BF BF BF BF BF BF BF BF BF BF BF

4030 BF BF BF BF BF BF BF BF BF BF BF BF BF BF BF BF

>f8000,803f,0

>d8000,803f

8000 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 01

8010 00 00 01 01 00 01 01 00 00 00 00 01 01 00 01 00

8020 00 00 00 01 00 01 00 01 01 00 00 01 01 01 00 01

8030 00 00 01 00 01 00 00 01 00 01 00 01 01 01 01 01

>f8000,803f,ff

>d8000,803f

8000 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

8010 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

8020 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

8030 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF