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FM92R Source Listing -  Last updated 9:20 pm 8th September 2002.

Thanks go to Terry VK4KTP for some of the option byte definitions:

21 Aug 2002
1BE8 - Ch 1 frequencies (1st 3 bytes RX - 2nd 3 bytes TX) 1BF0 - Ch 2 frequencies, through to 1EF9 - Ch 99 frequencies. 1F31 - Default Power-up Channel - defaults to Lowest Channel programmed. 1F3E - Ch No (in Hex) of Highest Channel programmed 1F3F - Ch No (in Hex) of Lowest Channel programmed 1F41-1F4A - Scan Group 1 Channels 1F4B - No of Channels in Scan Group 1 1F4D-1F56 - Scan Group 2 Channels 1F57 - No of Channels in Scan Group 2 1F64 - Eprom Checksum 1FE2-1FE4 - Date binary file created - stored in DDMMYY format (in decimal). 1FEB-1FEF - Indicates which Master Binary File was used. eg. 30 30 32 30 3A - (0020:) FM91 (Hardware Code:9502 97340000) 30 30 32 38 3A - (0028:) FM92L (Hardware Code:9502 92330000) 30 30 32 39 3A - (0029:) FM92R (Hardware Code:9502 92340000)
2 Sept 2002
Two more option bytes for the FM92.
1F40 - Lists Scan Group 1 Priority Channel.
1F4C - Lists Scan Group 2 Priority Channel. 
6 Sept 2002
I have been told that the bytes at 1F58 (01) and 1F59 (02) are the UP and DOWN buttons on the front panel, and if transposed, cause said buttons to work back-to-front. I haven't tried it yet.

6805 Assembler suitable for assembling FM92R code (although I have not tried it yet)

FM900 Page - Mr Skinny's home of radio



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