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Booting from serial port
If no ROM or RAM image is found, or no valid SDHC card is present, the Q68 will print the message „Load
ROM from SER" and attempt to boot from serial port. A fixed baudrate of 115200, no parity, no hardware
handshake is expected.
The remote station must first send a header of 4 Bytes to the Q68 which contains the length of the followi-
ng data stream as a big endian 32 bit unsigned integer. Then it sends the data. If the Q68 receives the
data correctly, it will respond with a byte containign the ASCII code 'Q', otherwise the ASCII code 'E' for er-
ror. During the transfer, the programmable LED of the Q68 will blink.
The serial data stream will be loaded at address $0 to the Q68 ROM area and started by a hardware reset
like a ROM image from SDHC card.
Q68 Clock Utility
Under SMSQ/E, the Q68 clock can be set by the SDATE command. But without further action, this setting
would be lost after the power supply is turned off.
In order to keep the new clock setting while the machine is powered off, it is required to write it back to the
buffered real time clock chip of the Q68. This is done by executing a clock utility program named
„Q68SETRTC" which should have been distributed with the Q68.
For example, if the „Q68SETRTC" program is in the root directory, one would type:
EW WIN1_Q68SETRTC
It is sufficient to do this once after a new clock setting was made.
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