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WindEmu
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experimental emulator for Psion Series 5mx (Windermere)
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Ash Wolf a746bd9e5f lots of arm710a fixes 2019-12-22 13:45:46 +00:00
WindCore lots of arm710a fixes 2019-12-22 13:45:46 +00:00
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README.md add skeleton support for the Etna chip, including PROM support 2019-12-20 23:46:22 +00:00
WindEmu.pro initial commit 2019-12-19 00:27:23 +00:00

README.md

WindEmu is an attempt to emulate the Psion Series 5mx (or as internally called, "Windermere"). I don't think anyone's done this before... or if they have, I can't find evidence online!

  • Platform-independent core emulation library written in C/C++
  • Qt5 front-end (currently quite barebones...)
  • Very experimental
  • Boots from the Psion 5mx Pro's Sys$rom.bin

Hardware features:

  • ✅ LCD: partially implemented
  • ✅ Keyboard: implemented
  • ❌ Touch panel: not implemented
  • ❌ Audio: not implemented
  • ❌ Serial/UART support: stubbed out
  • ❌ ETNA (PCMCIA/CompactFlash): mostly stubbed out
  • ✅ RTC: implemented
  • ❌ RTC alarm: not implemented
  • ❌ Standby mode: not implemented

Known issues:

  • ROM path is hardcoded into WindQt/main.cpp right now
  • Memory protection is not enforced
  • Memory errors do not result in an Abort exception but instead make the emulator freak out
  • Some keys do not work properly
  • State is not saved (just like a real Psion :p)
  • LCD controller is almost entirely unimplemented aside from the very basics to display the framebuffer
  • EPOC misbehaves massively with memory banks larger than 0x800000 (may be an OS design flaw? need to confirm)

Copyright

The Psion-specific code is copyright (c) 2019 Ash Wolf.

The ARM emulation core is a modified version of the one used in mGBA by endrift.

WindEmu is available under the Mozilla Public License 2.0.

Resources

Special thanks to PsiLinux/OpenPsion for providing an avenue to learn about the hardware definitions (registers, etc).

More information on the hardware is available in the NetBSD port: http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/arch/epoc32/?only_with_tag=MAIN

The EPOC C++ SDK is available here: https://web.archive.org/web/20071010101808/http://www.psionteklogix.com/teknet/pdk/netpad-pdk/epoc_downloads.htm

The ARM variant used in the 5mx is documented here: http://infocenter.arm.com/help/topic/com.arm.doc.ddi0033d/DDI0033D_710a_prelim_ds.pdf

The datasheet for the CL-PS7110 SoC used in the Series 5 (not the 5mx) is available here: https://www.igorkov.org/revo/datasheets/CL-PS7110.pdf - while not identical to Windermere, some components operate in similar fashion.