8031 "base 2" board
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A second processor board with :
- 8031 (or 40 pins compatible controller),
- 8 à 32 ko of EPROM,
- Extension, reset, I2C bus, RS232,...
A basic board (no RAM) dedicated to small propjets.
8031 "base 2" board
A picture of the board sized 4 inches by 4 inches (102 mm by 102 mm).
Schematic
The RS232 link may be omitted.
The strap neat the prom must be connected int the case of an EPROM (ex. 27C64) and omitted with an E2PROM (ex. 28C64).
The connections allows to use a xxC64 or a xxC128.
PCB
The PCB of the processor board.
Click on the picture to display the full resolution PCB (86 ko).
It is a 4 by 4 inches board (102 by 102 mm) at 600 dpi resolution.
Component side
The place of the different components of the processor board.
Take care to the memories configuration and use, if necessary, the adequate resistors. With the scheme you will find easily the place of the different components.
Solder side
The yellow wires avoid a 2 faces PCB.
Here is the list of the wires needed.