|
 Click
here to download the latest version of B-EM for DOS (version 1.1).
Click here to download the latest version
of B-EM for Windows (version 2.2) (source code included).
Click here to download the latest version
of B-EM for Linux (version 2.2) (source code included).
Click here to download the previous version
of B-EM for Linux (version 2.0a) (source code included).
Click here to download the latest version of B-EM for Mac OS X (version 1.0).
Click here to download the B-EM source
code (version 1.5).
June
3rd 2012
B-em v2.2 released.
Changes from v2.1a:
- MOS 3.50 emulation
- Fixed CRTC bug when programmed with stupid values (MOS 3.50 startup)
- ADFS disc corruption bug fixed (Carlo Concari)
- Fixed ACIA bug - Pro Boxing Simulator tape version now works
- Fixed bug which created endless blank hard disc images
- Printer port DAC emulation
- AMX mouse emulation
- Master 512 mouse now works properly
- Master Compact joystick emulation
- IDE emulation available in non-Master models
- UI fixes (some from Carlo Concari)
- Improvements to VIA emulation
- PAL video filter
- Bugfixes in ARM and 65816 coprocessors
- Debugger fixes
- Tidying up of code
- Windows version can now build on MSVC as well as GCC
February
14th 2011
B-em v2.1a released.
Changes from v2.1:
- Keyboard bug fixed, Dr Who : The First Adventure now works
- Video ULA bug, Atic Atac now has correct colours
- Cursor inversion now works properly
- Linux screenshots now work
- Save states in Linux
November
15th 2010
B-em v2.1 Linux version released.
v2.1 has a more involved installation process than v2.0a, so the latter is still available.
October
25th 2010
B-em v2.1 released.
Changes from v2.0x:
- IDE hard disc emulation
- OpenGL video support (mainly for Linux)
- Fixed 360k discs in Master 512 mode
- Fixed some hanging bugs in Windows (mainly when resetting)
- Resizeable window in Windows
- Debugger improvements
- VIA and video fixes, cassette version of Lunar Jetman now works
- Lightpen fix, Pharaoh's Curse works
- Some mode 7 fixes
- Speed control
- Savestates
Linux version should be updated shortly.
August
26th 2010
B-em v2.0b released.
Fixes (hopefully) a keyboard bug on some machines running Windows 7.
March
16th 2010
B-em v2.0a released.
Fixes a few bugs in v2.0. Also Linux port is now available.
March
14th 2010
B-em v2.0 released.
Changes from v1.5:
- Most of the emulator re-written
- Cycle-accurate video emulation
- Higher quality mode 7
- Added 80186 (Master 512) and 65816 second processors
- BeebSID emulation (using resid-fp)
- FDI support is back
- Improved sound overall
- Much more stable
- Debugger
- Redefineable keyboard
- Now licensed under the GPL
Linux version should be out in a couple of days.
May
20th 2008
B-em v1.5 released.
Changes from v1.4a:
- Acorn Z80 tube emulation
- Various fixes to video and sound
- New bandpass sound filter - recommended! (sounds very BBC-ish)
- Fixed crash bug on exit
June
10th 2007
B-em v1.4a released.
This fixes the problems with modes 3 and 6. However, due to licensing problems, FDI disc images
are no longer supported.
May
15th 2007
B-em v1.4 released.
Changes from v1.3:
- 65c012 tube emulation (+ Master Turbo) - from 4mhz to 64mhz
- Fixed bug in ARM tube emulation
- Sideways ROMs supported in Master emulation
- Windows version now releases unneeded CPU time
- Sound should hopefully be better
December
13th 2006
B-em v1.3 released.
Changes from v1.2:
- Better sound in Windows version
- Better CSW support
- Bugfix in mode 7
- Bugfix in cursor handling - Frogman works again, no more random crashes in some games
- Periodic noise pitch now correct - see Icarus, Cute To Kill
- Video can now use hardware scaling - should be faster
- Removed colour errors with 2xSaI filter
- File dialogs now (finally!) work properly
Only Windows port updated at the moment, DOS version should be brought up to date before the end of the year.
July
28th 2006
B-em v1.2 released.
Changes from v1.1:
- Preliminary CSW support
- Improved timing, more protected
games work (eg Nightshade, Tapper, Beach Head etc)
- E00 DFS now supported
- Disc writing works properly again
May
7th 2006
B-em v1.1 released.
Changes from v1.0:
- Can now emulate a Model B
with 1770 FDC
- Better mode 7 emulation -
many programs improved, eg Granny's Garden
- Added cursor to modes 0-6
- Altered video timing a little
- Added more commands to 1770 FDC - Watford DDFS now works (single density only)
- Some optimisations to video code
- Update VGM logging to latest spec
February
1st 2006
The OS X port has been
updated to version 1.0, thanks to Thomas Harte.
December 24th 2005
B-em v1.0 released.
Changes from v0.82:
- FDI support. Allows
use of copy protected disc images. A few bugs in FDC emulation
remain, however about 75% of FDI images dumped so far work.
- Improvements to timing,
Joust now works, along with some Kevin Edwards protected games.
- Master Compact emulation
(largely for some of the dumped FDI images).
- Slight improvements
to cassette emulation, loader on Joust now works, speedup now
available.
- Fixes and optimisations
to ARM emulation.
A load of FDI files will
be available at www.acornpreservation.org
later today, thanks to Dave Moore.
August
11th 2005
B-em v0.82 released.
Changes from v0.81b:
- ARM Evaluation System
emulation. Beware that this is quite slow and probably buggy
(I don't have any software to test on it)
- Fixed ADC/SBC BCD flags
that were broken in 0.8 - Exile works again
- Added read ID commands
to 8271 FDC - Superior Collection now works
- Ported to OS X
August
4th 2005
The first OS X alpha
of B-em is now available, thanks to Thomas Harte.
July
28th 2005
B-em v0.81b released.
Changes from v0.81a:
- Audio buffer length
now user selectable (Windows only)
- Fixed bug with instructions
like STA $FFFF,x - 3D Grand Prix no longer crashes
- A few other fixes
July
27th 2005
B-em v0.81a released.
Changes from v0.81:
- Adjusted audio a bit,
less lagging in Windows port
- Fixed VGM logging
July
26th 2005
B-em v0.81 released.
Changes from v0.8:
- Fixed bugs in 8271 and
1770 FDCs, all write operations should now work, along with formatting.
The Hobbit also now works correctly
- Fixed some crash bugs
- Added command line options,
mainly for use by frontends
July
2nd 2005
B-em v0.8 released.
Changes from v0.71b:
- Timing improvements,
some stuff that encrypts via timers (eg Frogman) now works
- VIA improvements - fixed
Planetoids/Super Defender/whatever, Volcano and Pharoah's Curse
- Improvements to sound
accuracy, Ghouls and Killer Gorilla (and probably others) have
better sound
- Cassette emulation now
much more reliable, and supports HQ-UEF files
- Save states are implemented
again
- Config file now in English
- Added high pass sound
filter and SID waveform
- Vastly improved Windows
port
July
27th 2004
B-em v0.71b released.
Changes from v0.71/0.71a:
- 8271 FDC now supports
writing
- FDC no longer crashes
B-em in The Hobbit
- Windows version should
be more responsive
July
6th 2004
B-em v0.71a released (Windows only update).
This release fixes a
stupid bug relating to system resources on Windows.
July
5th 2004
B-em v0.71 released.
Changes from v0.7:
- Stupid bug in Master
128 fixed - most Master stuff should work now
- High resolution video
now supported
- 2xSaI filter
- Bugs fixed in CRTC,
Uridium and Psycastria now look better
- Sound volume now logarithmic
- Couple of other bug
fixes
- Win32 port can now run
in a window
June
23rd 2004
Elkulator moved.
It is now at http://elkulator.acornelectron.co.uk
April
5th 2004
B-em v0.7 released.
Changes from v0.61:
- Master 128 emulation
(buggy)
- Better video timing,
Uridium works
- VIA interrupt bug fixed,
many games better
- Interrupt bug fixed,
Empire Strikes Back now working
- Disc write (B+ and Master
128 only)
- Sound mixing now 16
bit
- Low pass filter for
sound
- Improved disc drive
noise
- More reliable tape emulation
January
28th 2004
B-em v0.61 released.
Changes from v0.6:
- ADFS support
- Model A support
- Model B+ fixed a bit,
Level 9 adventures now show pictures
- Win32 version improved
a bit
- Some undocumented sound
stuff emulated - Crazee Rider now has correct drums
- Some other misc changes
July
31st 2003
B-em v0.6 released.
Changes from v0.5:
- Model B+ support, along
with 1770 emulation
- Totally rewritten 6502
core - faster, more accurate
- Fixed some VIA timing
- Revs now works
- UEF works better
- New GUI
- Improved sound core
- now supports sample playback
- Now emulates two disc
drives
- Win32 version now available
December
23rd 2002
B-em v0.5 released.
Changes from v0.4a:
- Totally rewritten 6502
core - faster
- Totally rewritten video
- better split palette/mode emulation + R5 scrolling and some
rupture
- UEF support is back
- New GUI
- Blurring filter
- Switchable sound waveforms
- Samples no longer crash
B-em
- Sideways RAM emulation
actually works
- Joystick emulation
As usual, any feedback
is appreciated. Send comments to : b-em@bbcmicro.com.
January
20th 2002
B-EM v0.4a released.
Changes from v0.4:
- Some 6502 bugs fixed,
Exile now working properly
- Re-added Model A emulation
- Disc drive noise added
- Default config file
no longer points to a non-existant file
- Can now log sound -
invented new file format for this (.sn - player and format description
included)
- Arrow keys and delete/copy
now work again
- Updated documentation.
(Still) wanted:
- Replica 2 (good tape-to-disc
menu prog)
- Tube docs
- Working ACIA emulation
- Any ideas on how to
get SN76489 samples working in Allegro's sound mixer
- Pinouts for the BBC
tape port (and to know if it's safe to poke wires in there -
I can't be bothered to make a real cable).
As always, feedback is
appreciated/welcomed/required(!) - the address to send any comments
to is: b-em@bbcmicro.com.
January
13th 2002
B-EM v0.4 released.
New in this version:
- Sound is *much* better
- Speed increased 2-4
times
- Video emulation improved.
Full overscan is supported, and the colour generation is the
same as on a real BBC
- New GUI
- UEF support removed,
as it were crap
- Directories semi-supported
in TFS (for Dambusters and Sorcery)
- Setup removed (no longer
needed)
- Some 6502 bugs fixed
- Sideways RAM emulation
added, but quite buggy
- Exile now works! (just)
- Elite is now playable!
April
23rd 2001
Uploaded a replacement source code zip that includes a couple
of extra files, plus improved documentation.
April
22nd 2001
Uploaded the B-EM source code.
Can anyone help with
any of the following?
- Speed up the 6502 emulation
- Speed up the video emulation
- Fix the 6850 emulation
- Fix some bugs in the
6522 emulation
- Sort out sound emulation
- Get bem.c to compile
with optimisation
- Neaten up the source
code (no chance!).
If you think you can
assist Tom in any way, please contact him at b-em@bbcmicro.com.
April
14th 2001
B-EM version 0.3a released.
Differences from the
last version:
- 'clear screen' command
removed, as it was using the same key as change disc
- stuff held in seperate
directories:
- roms - OS ROM and paged
ROMs
- inf - .INF files (with
the extension-less files as well)
- uef - .UEF files
- discs - .SSD, .IMG,
and .DSD files
- You shouldn't get 'chunk
ID' errors anymore with the UEF code
- American BBC support.
*Please* let Tom know
how you get on with the new version!!
Any feedback should be
directed to b-em@bbcmicro.com.
April
1st 2001
First public release of B-EM (version 0.3).
Features:
- Emulates the BBC Model
B
- All documented video
modes supported
- All documented and undocumented
6502 instructions
- 8271 Floppy Disc Controller
emulated (single drive, double sided, 80 track)
- Supports five formats
for BBC storage on PC - .ssd, .dsd, .inf, .uef (preliminary)
and __catalog__
- Sound emulation (preliminary)
- Snapshots
- Optional 6502 debugging
to file.
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