FlashBash PCB Mods
The Original Flashbash Hardware schematic has been modified to take advantage of the ST72F264, firstly because of its IAP capability - being able to update the firmware via the serial port. Also the 264 has a Hardware SCI/UART rather than the software uart used on the 254.
Below is the instructions required to take advantage of using the 264 SCI/UART.
| Pin No | Old Function | New Function |
| 18 | TX | BUTTON |
| 19 | RX | POWERON |
| 20 | BUTTON | TX |
| 22 | POWERON | RX |
Updating
is simply cutting the track to the current connection and wire linking
the new connection.
Make sure the correct firmware is loaded into the micro after the firmware
update.
At the moment there is no speed improvement by using the Hardware SCI/UART but its seems a shame not to use it as the 264 has one.
Note
The only other change is to the option bytes, please read options.txt for more info.
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01945
47 47 47 (UK) +44 1945 47 47 47 (Int) |
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01945
47 48 49 (UK) +44 1945 47 48 49 (Int) |
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