HP 64000

The systems assisted software development with assemblers and compilers for Pascal and C, provided hardware for in-circuit emulation of processors and memory, had debugging tools including logic analysis hardware, and a programmable read-only memory (PROM) chip programmer.

First, unlike most microprocessor development systems of the day, such as the Intel Intellec and Motorola EXORciser, it was not dedicated to a particular manufacturer's microprocessors, and second, it was designed such that up to six workstations could be connected via the HP-IB (IEEE-488) instrumentation bus to a common hard drive and printer to form a tightly integrated network.

A list of these by product number is: * HPCM is the Hewlett Packard Computer Museum In addition, there was a Pascal "Host Compiler", product number 64817A manual at Bitsavers, disk image at HPCM, which could be used to write programs to execute on the workstation host processor.

The 64000 system, through the use of optional cards and software, could perform in-circuit emulation of a variety of microprocessors and their memory.

The photo also shows a data acquisition pod for an "external" logic analyzer card in the 64100A that was measuring additional digital signals in the user system.

Depending on the model, the control board might also contain hardware to flag illegal opcodes or memory accesses or to act as an internal logic analyzer.

Some of the emulation processor controller cards offered internal analysis functions without separate hardware.

For many microprocessors, an "inverse assembler" was available that would convert values measured on the data bus to Opcodes for the user processor.