PAIA 650X, 8700 Assembler/Linker

[emmaker]

Would anyone know of a 650X assembler/linker that can assemble/link the PAIA 650X code without changing the code format?

It'd be nice if would be nice if it could produce a binary file too. But I can convert hex to binary if needed.

Thanks in advance.
Jay S.

[uniqview]

This link might be of use:
http://6502.org/tools/asm/

The 6502 is one of my favorite machines, along with the Signetics 2650, and the Zilog Z80.

Hope the link is useful!

[emmaker]

The 6502 is one of my favorite machines, along with the Signetics 2650, and the Zilog Z80.

What! Someone else knows what a 2650 was!

Worked on a products that used the 2650 in the early 80's. It worked fine for the first gen of product but for the second gen it was to under powered so they added a Z80 card to run the applications on. Only thing I remember is that the memory paging sucked and it was pretty basic.

Thanks for the info.
Jay S.

[uniqview]

The 6502 is one of my favorite machines, along with the Signetics 2650, and the Zilog Z80.

What! Someone else knows what a 2650 was!

Worked on a products that used the 2650 in the early 80's. It worked fine for the first gen of product but for the second gen it was to under powered so they added a Z80 card to run the applications on. Only thing I remember is that the memory paging sucked and it was pretty basic.

Thanks for the info.
Jay S.

Yes, I used the 2650 to design a keyboard controller for a university modular synthesizer project in the late-1970s. What I really liked about it was that it was architecturally somewhat like a PDP-11, but for an 8-bit machine. In fact, a fellow student who collaborated on this project, used a PDP 11/45 to write a 2650 cross-assembler and linker in C. Then he wrote the 2650 assembler program to produce a 4-voice music keyboard scanner to output control voltages and gate/trigger signals, via a DAC, LF398's, and related TTL logic. I recall now that Signetics also had a nice little ROM chip that they provided with the 2650 that offered a machine language monitor and debugger. We used that monitor on a little 2650 prototype system connected to a Model ASR 33 teletype machine for many months to run tests, get things working.

Immediately after that project ended, I was immersed in the world of Z80, starting January of 1981. One of my first projects for Z80 was a microprogrammed STD BUS arithmetic accelerator, which used a fast multiply/divide chip from Monolithic Memories.

... and Monolithic Memories, Inc. (MMI) is how I ended up in Silicon Valley for the last 36 years!