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- Z-80/8080 TDL BASED DISASSEMBLER
-
- The program will disassemble any Z-80 or 8080 object program
- and reconstruct a TDL assembly format compatible source file
- on the console or disk. The object file resides in memory at
- any location up to the starting address of the disassembler.
- Binary files may be loaded at any time and utilities are
- provided to manipulate and examine loaded files. Disassembly
- may be effected in multi-segment passes, with each segment
- starting at any location and ending at any location within
- the range 0000-ORIGIN. The latter may or may not be the
- execution locations of the object program. For each
- segment/pass, run-time options may be specified as follows:
-
- [a] Use the symbol table for the label
- field and address field (see option g)
-
- [b] Do not initialize the symbol table
- nor the disk source file (see option i
- for exception). Use this option to
- append entries to the symbol table and
- new lines to the disk file.
-
- [c] Build symbol table using the Lxxxx
- format for extended reference
- instructions. (see options a and g for
- execptions)
-
- [d] Generate labels Lxxxx instead of the
- default HEX values xxxxH.
-
- [e] Generate ASCII characters in quotes
- depending on option f. If option f is
- true, all printable ASCII characters
- will be placed in quotes following the
- .Byte pseudo opcode. If option f is
- false, all two operand instructions with
- data will be followed as a comment by
- the quoted ASCII character corresponding
- to the data.
-
- [f] Generate .BYTE pseudo opcode instead
- of default assembly code. Use this
- option for proper disassembly of
- segments consisting of tables and ASCII
- strings.
-
- [g] Normally the operands of LXI instr.
- are treated as 2 byte data rather than
- as an address. Use this option to over
- ride this default. If this option is
- selected, the 2 byte operand of LXI
- instructions will be used to build the
- symbol table and if already there, the
- symbol entries will be used in place of
- the default HEX format.
-
- [h] Write/Build a reconstructed SOURCE
- FILE in disk and in a compatible format
- ready for re-assembly by the TDL MACRO
- RELOCATING ASSEMBLER. If the source file
- is new, you will be prompted for the
- filename.
-
- [i] Restart the disk file regardless of
- option b. Use this option to over ride
- the APPEND mode without affect on the
- specified action on the symbol table.
-
- [j] Close the source file at the normal
- termination of this segment/pass.
-
- [k] Suppress console output. Use this
- option during symbol table building
- pasess to expedite disassembly.
-
- ALL OPTION ARE SELECTED WITH THE 'O' COMMAND. ALL OPTIONS
- ARE INITIALIZED OFF. EACH TIME THE 'O' COMMAND IS USED, ALL
- DESIRED OPTIONS MUST BE SELECTED SINCE THE COMMAND RESETS
- EACH OPTION.
-
- The following describes the command mode of the
- disassembler. All line editing features of CPM are
- available in the command mode except Control-C. DO NOT USE
- CONTROL-C TO RETURN TO CPM.
-
- RUBOUT delete and echo the last character typed
-
- ctl-U delete entire line
-
- ctl-X (same as ctl-U)
-
- ctl-R retype current line
-
- ctl-E physical end of line
-
- ctl-S stop the console output temporalily
-
- D aaaa,bbbb Disassemble memory from start address aaaa to
- end address bbbb
-
- R drive:file Read a binary file into memory. All files must
- have a 'COM' extension. Files are loaded at
- start address 100H and the length of the file
- will be displayed at the console.
-
- O a,b,c,... Set runtime options. All options are reset
- with this command and selectively set.
-
- Q Quit session and return to CPM. The number of
- current symbol table entries is displayed.
-
- M aaaa,bbbb,cccc Move memory starting at aaaa and
- ending at bbbb address cccc.
-
- H aaaa,bbbb Hex math. The sum and difference will be
- displayed.
-
- S aaaa,bbbb Show memory in HEX.
-
- T aaaa,bbbb Type memory in ASCII.
-
- C Close source file. Use this command when write
- errors occur or end of medium.
-
- ---ALL PARAMETERS ARE IN HEX ---
-
- AUTHOR: Timothy Mark Burke
- DATE: October, 1979
-