| What is it? | |||
| This is a complete kit for an Atmel 28C256 adapter. (Does NOT include Atmel 28C256) | |||
| Kit comprises of: | |||
| 1 x PCB | |||
| 1 x 47k Resistor | |||
| 2 x 14 way header | |||
| 1 x 4 way DIP switch | |||
| 1 x 28 pin DIL socket | |||
| Why did you make it? | |||
| When I am developing programs for inclusion in the 27C256 EPROM of my 65C02 SBC, I find it really tedious having to keep UV erasing them for any program changes. | |||
| This adapter allows me to program a 28C256 EEPROM and then fool my 65C02 SBC into seeing it as a 27C256. Any changes needed are programmed into the chip after changing the switch settings back to program mode. | |||
| What makes it special? | |||
|
It is a very simple and useable design. |
|||
| Switch Settings | |||
| 1 & 4 on, 2 & 3 off : Program 28C256 (Read and Write) | |||
| 1 & 4 off, 2 & 3 on : Read 27C256 | |||
 |
|||
 |
 |
 |
|
 |
|||
| (c) 2021,2022,2023 Paul Bartlett | |||
