8051 Debugger/deassembler/simulator

8051 Debugger/deassembler/simulator
Latest version: beta 1.9
Language versions: Polish and English

ATTENTION: this software works only in Windows 95/98/Me.

Developement of the newest 2.0 non-beta version of ADD Debugger was stopped definitely due to lack of time and resources. That's why you can from now on download the source code of ADD Debugger 1.9 beta. It was written in Borland Pascal 7.0 (no OWL, pure API, ASM code in simulation unit) and well-commented (Polish language only). You can use it free of any charge because it's public domain code (binary version belongs to freeware category). Click here to download the source code.

You can view beta version of debugger's QuickStart HTML version here.

Downloadable file:

Debugger 8051 version 1.9 beta archive here

New features and changes in version 1.9:

New support for indirectly addressable additional 128 bytes of internal memory (8052-style), set in menu Settings. When writing Internal RAM contents to file, only first 128 bytes and SFR area are saved. The same in reading
Number base added in window type "Numbers" (dec/hex/bin)
Writing EPROM, RAM and Internal RAM contents to file as an array of bytes enclosed in 'db' directives
Deassembling procedures speed up
Writing EPROM contents in ASM files after deassembling
You can put new data bytes in EPROM area by double-clicking in "Code" window and then just writing "DB" as an instruction mnemonic
Ctrl-O key combination moves the last active "Code" window view to the place of Program Counter (PC)
New window type added: "Terminal", you can resize it up to 80x25
Minor changes in dialog window: "About"
STOP key changed to F12 (previously ESC)
Activation state of every window is now written into .INI file
EPROM, RAM and Internal RAM display windows are now resizeable
Some windows now properly react to nonstandard system font size
User changable "system" font face and size

A picture of working program: (click to enlarge)

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