Table 6-3 Debugger's Command Syntax FILL MEMORY: This command allows the user to fill a range of memory with the desired byte pattern. Command line syntax: f-xxxxx-yyyy-zz- [Fill Memory] f: Fill memory command. xxxxx: Beginning memory address to be filled. yyyy: Byte count. zz: Hex byte value to be written. GO: This command allows the user to start executing program based on the values in the code segment (cs) and instruction pointer (ip) registers. Command line syntax: g [Go/start execution] g: Go command. HELP: This command displays the debugger's menu and its required syntaxes. Command line syntax: h [Display Debugger Menu] INPUT PORT:
This command allows the user to read in the word value of the port, designated in the given address. Command line syntax: i_xxxx [Input from System Port] i: Input port command xxxx: Port address FLOPPY I/O: This command allows the user to communicate directly with the floppy controller chip (NEC uD765). The user is required to enter the right amount of parameter bytes for a particular command operation. (Refer to the NEC uD765 specification for more information). Upon receiving a carriage return, the Monitor passes the command byte as well as all the parameter to the controller.
After the command is finished, the status bytes are displayed on the screen in the same format as in the controller specification. Also, the starting address of the disk buffer during read/write command is defaulted to location 10000 (hex) 6-8