Updating the AP6 Control ROM
                       ============================

If the AP6 control ROM is programmed into an EEPROM it can be reprogrammed
with updated software as follows. You will need a disk with the updated AP6
control ROM and a disk *EELOAD command. You must not use the AP6 *SRLOAD
command as it will overwrite itself as it is reprograms itself.

If necessary, replace the filename 'AP6ROM' in the instructions with the
appropriate filename on the disk.

 * Turn off the power and open the Plus 1 case.
 * Remove the AP6 control EEPROM from socket 12 at the far right.
 * Identify socket 5, the second socket from the left.
 * If there is already an IC in socket 5 temporarily remove it.
 * Plug the AP6 control EEPROM into socket 5. Ensure link 4 is removed.
 * Turn the power on.
 * Verify the AP6 EEPROM is now in socket 5 by typing *ROMS.
 * Allow writes to socket 5 with *UNLOCK 5.
 * Update the AP6 EEPROM with *EELOAD AP6ROM 5. (see above)
 * Restart the Electron by typing *FX200,3 then press Break.
 * Do *ROMS to confirm the updated software is in ROM 5.
 * Turn the power off and return the AP6 EEPROM to socket 12.


Note: If you have two AP6 control ROMs present, you will get a repeating
error on Power-On and Ctrl-Break. Press Soft-Break to recover, and then
*UNPLUG one of them.