This is an Orao emulator for the SAM Coupé. It emulates the Croatian Eagle home computer, a 6502-based machine developed by PEL Varaždin and released in 1985.
It’s really a proof-of-concept project rather than a practical emulator, though it does provide a surprisingly complete emulation considering the running platform:
Running speed is around 1/8th that of the original machine, but also dependent on how much is being written to the display. The animated images below show the running speed on a normal SAM (6MHz Z80B).
Using the Quazar Mayhem accelerator board (at 20MHz) gives up to 75% original speed. As well as the increase in processor speed, it benefits from reduced memory contention and the emulation’s heavy register use. Games are finally playable!
Version 1.2, last updated 5th September 2008.
|Esc||Snapshot Selection Menu|
|Symbol-1 to 3||View Top/Middle/Bottom of Orao Display|
|Symbol-Up/Down||Scroll View Up/Down 8 Pixels|
|NumPad-1 to 4||F1 to F4|
|NumPad-5 to 9||Ć, Ž, Š, Đ, Č|
In SimCoupe, use Ctrl for the Symbol key modifier.