NietsTeDoen
Member
- Joined
- Jul 2, 2023
- Messages
- 10
- Delivery Options
- In Country Shipping or Local Pickup
I have two clean and working Universal Dynamic PET motherboards for sale at $279 each. I will ship within the contiguous US. Local pickup in central New Jersey is also an option.
The motherboards are:
#1: Assy # 8032089 (40 columns)
#2: Assy # 8032090 (80 columns)
Each motherboard:
Passes 24-hour 32k DRAM and screen memory test
Passes read/write test of cassette port 1
Passes read/write test of cassette port 2
Passes read/write test of IEEE-488 interface
Passes read/write test of user port
Piezoelectric speaker works
Keyboard interface works
Video output works
KERNAL ROM checksum is correct
BASIC ROMs checksum is correct
Screen editor ROM checksum is correct
Upper case/graphics and lower case character sets are correct
Note that on motherboard #1 (assy 8032089), there is a trace that was scratched through by a previous owner, below UC2. It has been repaired by soldering in a jumper and does not affect operation.
The motherboards are:
#1: Assy # 8032089 (40 columns)
#2: Assy # 8032090 (80 columns)
Each motherboard:
Passes 24-hour 32k DRAM and screen memory test
Passes read/write test of cassette port 1
Passes read/write test of cassette port 2
Passes read/write test of IEEE-488 interface
Passes read/write test of user port
Piezoelectric speaker works
Keyboard interface works
Video output works
KERNAL ROM checksum is correct
BASIC ROMs checksum is correct
Screen editor ROM checksum is correct
Upper case/graphics and lower case character sets are correct
Note that on motherboard #1 (assy 8032089), there is a trace that was scratched through by a previous owner, below UC2. It has been repaired by soldering in a jumper and does not affect operation.
