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- Archive-name: acorn/faq/part3
- Frequency: bi-weekly
-
-
- 7.5) What WWW pages are out there for Acorn topics?
-
- Web pages are popping up all over the place these days, especially now
- that Web client software exists for Acorn machines. This list of Web pages
- is checked periodicly by myself for validity but I make no claims that
- URL's present here are currently valid. A more comprehensive list is
- contained in the fortnightly FTP servers list maintained by Gerben Vos.
-
- * http://www.acorn.co.uk/
- Acorn Computers WWW pages.
-
- * http://www.stir.ac.uk/~rhh01/Main.html
- "Acorn On The Net" list page - contains pointers to other Acorn Web pages.
-
- * http://www.ee.surrey.ac.uk:80/Societies/Acorn/
- The Acorn computer user WWW Server. - contains pointers to other Acorn
- Web pages.
-
- * http://www.ant.co.uk/
- ANT Ltd web pages.
-
- * http://http1.brunel.ac.uk:8080/~cs92adf/
- The ARM Club home page.
-
- * http://www.geko.com.au/riscman/
- Australian Acorn Enthusiast Web site.
-
- * http://www.csc.liv.ac.uk/users/u1smt/u1smt.html
- "The Jungle" Simon Truss's web page containing pointers to a variety of
- other web pages.
-
- * http://www.zynet.co.uk/minerva/
- Minerva Software's home page.
-
- * http://www.zynet.co.uk/
- Zynet Ltd's home page.
-
-
- ----------------------------------------------------------------------------
-
- Section 8: Compatibility with other Machines.
-
- ----------------------------------------------------------------------------
-
- 8.1) How compatible with other systems is an Acorn machine?
-
- PC :- The Archimedes can handle DOS discs (720k; the A5000 and later
- models can also handle 1.44M floppies). In RO3, this is built in, under RO2
- you have to use one of the (PD) utilities. There are two PC (software)
- emulators that can handle most PC software, three if you count the fact
- that Acorn's offering is split into two emulator programs. There are also
- PC cards, containing an 80x86 processor and other PC hardware, which uses
- the Archimedes' disc and video. All emulators are multitasking (and not
- PD). RiscPC machines, by adding a 486 processor card, can fully emulate a
- PC.
- Unix :- Unix software can be ported (and in fact many packages already
- have been) with the help of UnixLib, which is PD. Memory-hungry ports, such
- as gcc, can be run with the aid of !Virtual (also PD). Of course if your
- really desperate to run Unix software it might be advisable to buy RISCiX,
- the Acorn flavour of Unix.
- Mac :- Software has been released that reads Macintosh High Density
- discs and there is some out there which claims to read the low density ones
- as well (I have yet to verify this personally though) so that the shifting
- of files to and from a Macintosh is possible. Also most modern Macintoshs
- can, like Acorn machines, read and write PC format discs so transfer is
- possible via that medium as well. There is no Mac emulator available.
- Atari ST :- Like PC floppies, the Archimedes can read, write and format
- ST-format floppies. No emulator for the ST is known.
- Amiga :- The amiga uses an unusual disc format that is not easily read
- by other machines. Accordingly there is currently no Amiga format disc
- reader available. But Amiga's can read PC discs, so again transfers can
- occur via that medium. There is no Amiga emulator.
- Spectrum :- There are emulators around for this and Amstrad, the owners
- of the Sinclair copyright, have released permission for the ROM images,
- needed to run these emulators, to be copied and released with the
- emulators.
- Apple][ :- Again emulators are available for this. However they, like
- the Spectrum emulators, require a copy of the ROM image to work. The
- copyright of the ROM image for these machines, as far as I am aware,
- prevents them being distributed, so you have to source your own copy of it.
-
- ----------------------------------------------------------------------------
-
- 8.2) Is there a BBC BASIC for other machines?
-
- The short answer is, yes.
-
- Macintosh :- A BBC BASIC environment was released some years back as a
- commercial product featuring compatibility with a limited subset of
- OS_Bytes and other features for limited compatibility with a BBC Model B.
- IBM Compats :- A version of BBC BASIC exists for these machines.
- Apparently it is fairly old and runs on any DOS better than 3.30. It
- features an inbuilt BASIC editor, limited OS_Byte support, some OSCLI
- commands and CGA standard graphics. I am unsure of it's copyright status,
- but it is available at ftp://ftp.misa.ac.ru/usr/ftp/bbc
-
- ----------------------------------------------------------------------------
-
- 8.3) Can I run the BBC Emulator on the Risc PC?
-
- Officially, no. Unofficially there is a patch that enables the Emulator
- to run fairly well. Unfortunately the patch does not correctly enable the
- break key so that you cannot reset the emulator easily from inside the
- emulator. However everything else seems functional. Here is the patch :-
-
- REM >HostPatch
- REM RISC PC !65Host patch
- REM Obtained from comp.sys.acorn.games
- REM Provided by stimpy@gladding.demon.co.uk (Tim Gladding)
- REM of Cambridge, England
- SYS "OS_File",5,"<65Host$Dir>.!RunImage" TO t,,,,len
- DIM data len
- SYS "OS_File",255,"<65Host$Dir>.!RunImage",data
- FOR ptr=0 TO len-4 STEP 4
- word=data!ptr
- IF word=&E3520402 OR word=&E2600402 OR word=&E3510402 THEN
- data?ptr=&05
- ENDIF
- NEXT ptr
- SYS "OS_File",10,"<65Host$Dir>.!RunImage",&FFA,,data,data+len
-
- It is a BASIC program - simply enter it into the BASIC editor of your
- choice, let the filer see the copy of 65Host that is to be patched and run
- it. A copy of the 65Host emulator can be found on the Acorn FTP site.
-
- ----------------------------------------------------------------------------
-
- 8.4) Can I read BBC B formated discs on a PC?
-
- Yes, a utility called BeebDos exists which claims to proide this
- functionality. It is a commercial program and was sold by :-
-
- MicroBoss Ltd,
- Business Orientated Software Systems
- Telephone: 01255 671095 (Uk number)
- 3 Hadleigh Road,
- Frinton on Sea,
- Essex,
- CO13 9HG.
-
- Unfortunately I am unaware if they currently still sell the program or not.
-
- ----------------------------------------------------------------------------
-
- Section 9: Technical Details.
-
- ----------------------------------------------------------------------------
-
- 9.1) How do I get a faster interupt timer than the centisecond ones?
-
- For this you require the use of IOC Timer 1, a 2MHz timer unused by RISC
- OS and claimable by code for use. Details of how to program the timer are
- available in the IOC datasheets, or you could look for various PD utilities
- like TimerCtrl that handle the timer for you.
-
- ----------------------------------------------------------------------------
-
- 9.2) How can I create Interlaced GIFs on Acorn machines?
-
- There exists a utility called WebGIF which will allow you to add
- transparency and interlacing to your GIFs.
-
- ----------------------------------------------------------------------------
- Thanks go to all the people who have contributed corrections and additions
- to the list. Without this help this list would be a hell of alot buggier
- (spot the programmer... :-) ) than it is...
- ----------------------------------------------------------------------------
- All additions, corrections & suggestions for the FAQ List should be sent to
- banks_p@kosmos.wcc.govt.nz. Being the maintainer of this FAQ I reserve the
- right to be wrong, incorrect, slow, out of date and generally how I please
- with the FAQ List.
-