Debugger Stalker Stealth Monitor для ZX Spectrum

The "Stalker Stealth Monitor" is a debugger software developed by Ivan Roshchin, released in 1994. It is designed for use with the ZX Spectrum and compatible systems, allowing users to load and debug @-files that occupy the full 48 kilobytes of memory. This capability makes it an essential tool for hackers and developers working with these systems.

The software offers an enhancement that enables users to record the state of all processor registers at a specific moment by pressing a combination of keys "SS+U". This feature is particularly useful for debugging purposes, allowing the continuation of program execution in a step-by-step mode after capturing the state.

To apply the enhancement, users need to ensure the presence of specific files and enter a program starting at address #FE31. The software provides options to save the modified program, either as a complete STS with changes or as a separate file containing only the modifications.

The software is specifically designed for STS 4.3 and requires careful setup to avoid overwriting the monitor. Users are advised to set the Bank to #18 and follow specific steps for loading @-files, ensuring correct stack pointer settings for successful debugging.