go87

HP 87 hardware emulator (best display on 1280x800 screen device)

- include one quad disc HP9121 compatible disk unit (use RAW disc image)
- ram from 64 KB upto 2 MB (if you need more, 16 MB is possible, 8 MB for basic, 8MB for electronic disc)
- cpu speed from x1 upto x50 (now UCSD pascal is fast enough)
- rom drawer support (some usefull roms included)
- external keyboard support (physical or bluetooth)
- HP87 base model : graph crt at 544x240 as the real computer
- HP87+ : graph crt at 640x480 (roms patched)
- HP87++ : graph crt at 1016x480 (roms patched)
- cpu emulated in native C code for speed up
- landscape and portrait mode
- no sound

Directory base is /go87 for android < 4.4 and /Android/data/o2s.emul.hp87/files for other
On S5 devices, long press the right hardware button to get the menu.

Settings : press left part of emulated crt

Disks : put raw images named zzzz.d87 in go87/disks on sd card
Roms : put raw images (8K) named zzzz.r87 in go87/roms on sd card

To insert or remove disk : long press D70x buttons

Landscape mode is better for 87++ mode,
Portrait mode, use 'menu/actions/rotate' the choose ratio (HP87 crt or HP86 crt) with 'menu/actions/...ratio'

For some infos look at
http://www.series80.org/
http://sites.google.com/site/olivier2smet2/hpseries80/fpga-hp86b