Motorola DragonBall MC9328MX1 Reference Manual page 168

Bootstrap Mode Operation
— ! (exclamation point)
— " (quotation mark)
— # (number sign)
— $ (dollar sign)
— % (percentage symbol)
— & (ampersand)
— ( (opening parenthesis)
— ) (closing parenthesis)
— * (asterisk)
— + (plus sign)
— - (minus sign)
— . (period)
— / (forward slash)
— , (comma)
• The bootloader program echoes all characters being received, however only those having an ASCII
code value greater than or equal to 0x30 are kept for b-record assembling. Sending a character that
is not a b-record (ASCII code value less than 0x30) will force the bootloader to start a new b-record.
• General-purpose registers r7–r14 and supervisor scratch registerss3 are used by the bootloader
program. Writing to these registers may corrupt the bootloader program.
• Please visit the DragonBall Web site for bootstrap utility programs.
9-8 MC9328MX1 Reference Manual MOTOROLA