The Cosmac "ELF" was a simple-to-build hobby microcomputer produced in the mid-70's that was designed to be expandable and adaptable to new applications. It was based on the RCA CDP1802 COSMAC microprocessor chip that sold for less than $30. The chip could use any combination of standard RAM and ROM devices and could address up to 65Kb of memory. It had flexible programmed I/O and program-interrupt modes, an on-chip DMA, four I/O flag inputs directly tested by branch instructions, and a 16 x 16 matrix of registers for use as multiple program counters, data pointers, or data registers.
 | TinyELF 1.4 for OS X 10.4 or greater (includes untested support for intel macs). |
| TinyELF 1.3 for OS X 10.3.x. |
TinyELF for Mac OS X brings emulation of 1802-based microcomputers to the Macintosh platform. TinyELF features pixie graphics, single-step debugging, a CPU state viewer, program execution trace, breakpoints and more.
 | the TinyELF for OS X home page. |
| the COSMAC ELF home page. |
