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L/Sprow1
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
| Tape/disk: | Home » Personal collection » Acorn ADFS disks » Electron_User_Group » EUG_24.ADF |
| Filename: | L/Sprow1 |
| Read OK: | ✔ |
| File size: | 09FD bytes |
| Load address: | 53204556 |
| Exec address: | 776F7270 |
File contents
6 Bollinbrook road,
MACCLESFIELD,
Cheshire.
SK10 3DJ.
Dear Gus,
I looked through the EUG23 issue with interest and see that you
use a 3.5" disk with your Acorn Electron - does this use an 8271 disk
controller as the BBC does or does the Electron use the 1770 like in the
BBC upgrade kits?
You may see that I am not very well up on Electrons - we did used to
have on but its screen went funny.We sent it for fixing and a few weeks
later they rang back to say it had blown up and would cost more to repair
than it was worth (or is it that they couldn't be bothered and scrapped
it?).I have since encountered a similar problem with a friend's Electron
so I took it to pieces myself and cleaned the pins on the Ferranti ULA
(the square blob to the West) it fixed it...
Also on the disk is a program I have on a utilities disk which is
called *SEE allowing Mode 7 seamless scrolling up and down - is this of
use to you for the magazine or will it cause problems with
Electrons.Usage: *SEE <fsp>
One of your readers commented on Micro Computer Mart - this is a
company I have not heard of - DETAILS PLEASE?
Coming soon to a disk near you...
HOW TO MAKE A BBC to PC SERIAL LINK
HOW TO MAKE AN EPROM EMULATOR if you don't have sideways RAM
ASSEMBLE source code of UPTO 27k on a BBC B in one foul swoop
Robert Sprowson.
THE ELK HAS A NUMBER OF DISC DRIVE INTERFACES HOWEVER AS FAR AS I KNOW ALL
THE SUCCESSFUL ONES USED THE 1770 OR THE 1771. THE PLUS3 WHICH IS ACORN'S
ELECTRON DISC INTERFACE USED THE 1770 WITH ADFS.
THE ULA DOES SEEM TO CAUSE SOME PROBLEMS ON CERTAIN MACHINES, WHY I HAVE
NEVER FOUND OUT. NEITHER OF MY ELECTRONS HAS EVER SUFFERED BUT I KNOW OF A
FEW WHICH HAVE. YOUR SOLUTION IS THE RIGHT ONE AND TO THE BEST OF MY
KNOWLEDGE THROWING THE MACHINE IN THE BIN HAS NEVER CURED THIS PROBLEM.
NOW I HAVE IN THE PAST BULLIED SOME MEMBERS WHO HAVE PRODUCED SOFTWARE
WHICH WOULDN'T RUN ON AN UNEXPANDED ELK BUT THIS IS A SPECIFIC MODE 7 ITEM
AND WILL APPEAL TO MANY BBC AND MASTER USING MEMBERS AS WELL AS ELK
MEMBERS WHO HAVE ONE OF THE MODE 7 ADAPTORS.
MICRO COMPUTER MART IS A MAGAZINE WHICH IS PUBLISHED EVERY WEEK AND
CARRIES ADVERTS FOR SECOND HAND COMPUTERS AND COMPUTER SUPPLY COMPANIES
MAINLY PC's BUT OCCASIONALLY SOME 8 BIT INTEREST. INTERESTING READ IF YOU
HAVE SOME POCKET MONEY LEFT OVER.
THE MENU MODIFICATIONS YOU SUGGESTED I HAVE SENT TO RICHARD DIMOND FOR HIS
LEARNED OPINION. I KNOW HE WILL BE INTERESTED TO SEE THEM AND WILL
NO-DOUBT PUT SOMETHING INTO THE NEXT EUG.
00000000 0d 09 09 09 09 09 09 36 20 42 6f 6c 6c 69 6e 62 |.......6 Bollinb| 00000010 72 6f 6f 6b 20 72 6f 61 64 2c 0d 09 09 09 09 09 |rook road,......| 00000020 09 20 4d 41 43 43 4c 45 53 46 49 45 4c 44 2c 0d |. MACCLESFIELD,.| 00000030 09 09 09 09 09 09 20 20 43 68 65 73 68 69 72 65 |...... Cheshire| 00000040 2e 0d 09 09 09 09 09 09 20 20 20 53 4b 31 30 20 |........ SK10 | 00000050 33 44 4a 2e 0d 0d 44 65 61 72 20 47 75 73 2c 0d |3DJ...Dear Gus,.| 00000060 20 20 20 20 20 20 20 20 20 49 20 6c 6f 6f 6b 65 | I looke| 00000070 64 20 74 68 72 6f 75 67 68 20 74 68 65 20 45 55 |d through the EU| 00000080 47 32 33 20 69 73 73 75 65 20 77 69 74 68 20 69 |G23 issue with i| 00000090 6e 74 65 72 65 73 74 20 61 6e 64 20 73 65 65 20 |nterest and see | 000000a0 74 68 61 74 20 79 6f 75 0d 75 73 65 20 61 20 33 |that you.use a 3| 000000b0 2e 35 22 20 64 69 73 6b 20 77 69 74 68 20 79 6f |.5" disk with yo| 000000c0 75 72 20 41 63 6f 72 6e 20 45 6c 65 63 74 72 6f |ur Acorn Electro| 000000d0 6e 20 2d 20 64 6f 65 73 20 74 68 69 73 20 75 73 |n - does this us| 000000e0 65 20 61 6e 20 38 32 37 31 20 64 69 73 6b 0d 63 |e an 8271 disk.c| 000000f0 6f 6e 74 72 6f 6c 6c 65 72 20 61 73 20 74 68 65 |ontroller as the| 00000100 20 42 42 43 20 64 6f 65 73 20 6f 72 20 64 6f 65 | BBC does or doe| 00000110 73 20 74 68 65 20 45 6c 65 63 74 72 6f 6e 20 75 |s the Electron u| 00000120 73 65 20 74 68 65 20 31 37 37 30 20 6c 69 6b 65 |se the 1770 like| 00000130 20 69 6e 20 74 68 65 0d 42 42 43 20 75 70 67 72 | in the.BBC upgr| 00000140 61 64 65 20 6b 69 74 73 3f 0d 0d 20 20 20 59 6f |ade kits?.. Yo| 00000150 75 20 6d 61 79 20 73 65 65 20 74 68 61 74 20 49 |u may see that I| 00000160 20 61 6d 20 6e 6f 74 20 76 65 72 79 20 77 65 6c | am not very wel| 00000170 6c 20 75 70 20 6f 6e 20 45 6c 65 63 74 72 6f 6e |l up on Electron| 00000180 73 20 2d 20 77 65 20 64 69 64 20 75 73 65 64 20 |s - we did used | 00000190 74 6f 0d 68 61 76 65 20 6f 6e 20 62 75 74 20 69 |to.have on but i| 000001a0 74 73 20 73 63 72 65 65 6e 20 77 65 6e 74 20 66 |ts screen went f| 000001b0 75 6e 6e 79 2e 57 65 20 73 65 6e 74 20 69 74 20 |unny.We sent it | 000001c0 66 6f 72 20 66 69 78 69 6e 67 20 61 6e 64 20 20 |for fixing and | 000001d0 61 20 66 65 77 20 77 65 65 6b 73 0d 6c 61 74 65 |a few weeks.late| 000001e0 72 20 74 68 65 79 20 72 61 6e 67 20 62 61 63 6b |r they rang back| 000001f0 20 74 6f 20 73 61 79 20 69 74 20 68 61 64 20 62 | to say it had b| 00000200 6c 6f 77 6e 20 75 70 20 61 6e 64 20 77 6f 75 6c |lown up and woul| 00000210 64 20 63 6f 73 74 20 6d 6f 72 65 20 74 6f 20 72 |d cost more to r| 00000220 65 70 61 69 72 0d 74 68 61 6e 20 69 74 20 77 61 |epair.than it wa| 00000230 73 20 77 6f 72 74 68 20 28 6f 72 20 69 73 20 69 |s worth (or is i| 00000240 74 20 74 68 61 74 20 74 68 65 79 20 63 6f 75 6c |t that they coul| 00000250 64 6e 27 74 20 20 62 65 20 62 6f 74 68 65 72 65 |dn't be bothere| 00000260 64 20 61 6e 64 20 73 63 72 61 70 70 65 64 0d 69 |d and scrapped.i| 00000270 74 3f 29 2e 49 20 68 61 76 65 20 73 69 6e 63 65 |t?).I have since| 00000280 20 65 6e 63 6f 75 6e 74 65 72 65 64 20 61 20 73 | encountered a s| 00000290 69 6d 69 6c 61 72 20 70 72 6f 62 6c 65 6d 20 77 |imilar problem w| 000002a0 69 74 68 20 61 20 20 66 72 69 65 6e 64 27 73 20 |ith a friend's | 000002b0 45 6c 65 63 74 72 6f 6e 0d 73 6f 20 49 20 74 6f |Electron.so I to| 000002c0 6f 6b 20 69 74 20 74 6f 20 70 69 65 63 65 73 20 |ok it to pieces | 000002d0 6d 79 73 65 6c 66 20 61 6e 64 20 63 6c 65 61 6e |myself and clean| 000002e0 65 64 20 74 68 65 20 70 69 6e 73 20 6f 6e 20 74 |ed the pins on t| 000002f0 68 65 20 46 65 72 72 61 6e 74 69 20 55 4c 41 0d |he Ferranti ULA.| 00000300 28 74 68 65 20 73 71 75 61 72 65 20 62 6c 6f 62 |(the square blob| 00000310 20 74 6f 20 74 68 65 20 57 65 73 74 29 20 69 74 | to the West) it| 00000320 20 66 69 78 65 64 20 20 69 74 2e 2e 2e 0d 0d 20 | fixed it..... | 00000330 20 20 41 6c 73 6f 20 6f 6e 20 74 68 65 20 64 69 | Also on the di| 00000340 73 6b 20 69 73 20 61 20 70 72 6f 67 72 61 6d 20 |sk is a program | 00000350 49 20 68 61 76 65 20 6f 6e 20 61 20 75 74 69 6c |I have on a util| 00000360 69 74 69 65 73 20 64 69 73 6b 20 77 68 69 63 68 |ities disk which| 00000370 20 69 73 0d 63 61 6c 6c 65 64 20 2a 53 45 45 20 | is.called *SEE | 00000380 61 6c 6c 6f 77 69 6e 67 20 4d 6f 64 65 20 37 20 |allowing Mode 7 | 00000390 73 65 61 6d 6c 65 73 73 20 73 63 72 6f 6c 6c 69 |seamless scrolli| 000003a0 6e 67 20 75 70 20 61 6e 64 20 64 6f 77 6e 20 2d |ng up and down -| 000003b0 20 69 73 20 74 68 69 73 20 6f 66 0d 75 73 65 20 | is this of.use | 000003c0 74 6f 20 79 6f 75 20 66 6f 72 20 74 68 65 20 6d |to you for the m| 000003d0 61 67 61 7a 69 6e 65 20 6f 72 20 77 69 6c 6c 20 |agazine or will | 000003e0 69 74 20 63 61 75 73 65 20 70 72 6f 62 6c 65 6d |it cause problem| 000003f0 73 20 77 69 74 68 20 0d 45 6c 65 63 74 72 6f 6e |s with .Electron| 00000400 73 2e 55 73 61 67 65 3a 20 2a 53 45 45 20 3c 66 |s.Usage: *SEE <f| 00000410 73 70 3e 0d 0d 20 20 20 4f 6e 65 20 6f 66 20 79 |sp>.. One of y| 00000420 6f 75 72 20 72 65 61 64 65 72 73 20 63 6f 6d 6d |our readers comm| 00000430 65 6e 74 65 64 20 6f 6e 20 4d 69 63 72 6f 20 43 |ented on Micro C| 00000440 6f 6d 70 75 74 65 72 20 4d 61 72 74 20 2d 20 74 |omputer Mart - t| 00000450 68 69 73 20 69 73 20 61 0d 63 6f 6d 70 61 6e 79 |his is a.company| 00000460 20 49 20 68 61 76 65 20 6e 6f 74 20 68 65 61 72 | I have not hear| 00000470 64 20 6f 66 20 2d 20 44 45 54 41 49 4c 53 20 50 |d of - DETAILS P| 00000480 4c 45 41 53 45 3f 0d 0d 20 20 20 43 6f 6d 69 6e |LEASE?.. Comin| 00000490 67 20 73 6f 6f 6e 20 74 6f 20 61 20 64 69 73 6b |g soon to a disk| 000004a0 20 6e 65 61 72 20 79 6f 75 2e 2e 2e 0d 48 4f 57 | near you....HOW| 000004b0 20 54 4f 20 4d 41 4b 45 20 41 20 42 42 43 20 74 | TO MAKE A BBC t| 000004c0 6f 20 50 43 20 53 45 52 49 41 4c 20 4c 49 4e 4b |o PC SERIAL LINK| 000004d0 0d 48 4f 57 20 54 4f 20 4d 41 4b 45 20 41 4e 20 |.HOW TO MAKE AN | 000004e0 45 50 52 4f 4d 20 45 4d 55 4c 41 54 4f 52 20 69 |EPROM EMULATOR i| 000004f0 66 20 79 6f 75 20 64 6f 6e 27 74 20 68 61 76 65 |f you don't have| 00000500 20 73 69 64 65 77 61 79 73 20 52 41 4d 0d 41 53 | sideways RAM.AS| 00000510 53 45 4d 42 4c 45 20 73 6f 75 72 63 65 20 63 6f |SEMBLE source co| 00000520 64 65 20 6f 66 20 55 50 54 4f 20 32 37 6b 20 6f |de of UPTO 27k o| 00000530 6e 20 61 20 42 42 43 20 42 20 69 6e 20 6f 6e 65 |n a BBC B in one| 00000540 20 66 6f 75 6c 20 73 77 6f 6f 70 0d 0d 52 6f 62 | foul swoop..Rob| 00000550 65 72 74 20 53 70 72 6f 77 73 6f 6e 2e 0d 0d 54 |ert Sprowson...T| 00000560 48 45 20 45 4c 4b 20 48 41 53 20 41 20 4e 55 4d |HE ELK HAS A NUM| 00000570 42 45 52 20 4f 46 20 44 49 53 43 20 44 52 49 56 |BER OF DISC DRIV| 00000580 45 20 49 4e 54 45 52 46 41 43 45 53 20 48 4f 57 |E INTERFACES HOW| 00000590 45 56 45 52 20 41 53 20 46 41 52 20 41 53 20 49 |EVER AS FAR AS I| 000005a0 20 4b 4e 4f 57 20 41 4c 4c 0d 54 48 45 20 53 55 | KNOW ALL.THE SU| 000005b0 43 43 45 53 53 46 55 4c 20 4f 4e 45 53 20 55 53 |CCESSFUL ONES US| 000005c0 45 44 20 54 48 45 20 31 37 37 30 20 4f 52 20 54 |ED THE 1770 OR T| 000005d0 48 45 20 31 37 37 31 2e 20 54 48 45 20 50 4c 55 |HE 1771. THE PLU| 000005e0 53 33 20 57 48 49 43 48 20 49 53 20 41 43 4f 52 |S3 WHICH IS ACOR| 000005f0 4e 27 53 0d 45 4c 45 43 54 52 4f 4e 20 44 49 53 |N'S.ELECTRON DIS| 00000600 43 20 49 4e 54 45 52 46 41 43 45 20 55 53 45 44 |C INTERFACE USED| 00000610 20 54 48 45 20 31 37 37 30 20 57 49 54 48 20 41 | THE 1770 WITH A| 00000620 44 46 53 2e 0d 0d 54 48 45 20 55 4c 41 20 44 4f |DFS...THE ULA DO| 00000630 45 53 20 53 45 45 4d 20 54 4f 20 43 41 55 53 45 |ES SEEM TO CAUSE| 00000640 20 53 4f 4d 45 20 50 52 4f 42 4c 45 4d 53 20 4f | SOME PROBLEMS O| 00000650 4e 20 43 45 52 54 41 49 4e 20 4d 41 43 48 49 4e |N CERTAIN MACHIN| 00000660 45 53 2c 20 57 48 59 20 49 20 48 41 56 45 0d 4e |ES, WHY I HAVE.N| 00000670 45 56 45 52 20 46 4f 55 4e 44 20 4f 55 54 2e 20 |EVER FOUND OUT. | 00000680 4e 45 49 54 48 45 52 20 4f 46 20 4d 59 20 45 4c |NEITHER OF MY EL| 00000690 45 43 54 52 4f 4e 53 20 48 41 53 20 45 56 45 52 |ECTRONS HAS EVER| 000006a0 20 53 55 46 46 45 52 45 44 20 42 55 54 20 49 20 | SUFFERED BUT I | 000006b0 4b 4e 4f 57 20 4f 46 20 41 0d 46 45 57 20 57 48 |KNOW OF A.FEW WH| 000006c0 49 43 48 20 48 41 56 45 2e 20 59 4f 55 52 20 53 |ICH HAVE. YOUR S| 000006d0 4f 4c 55 54 49 4f 4e 20 49 53 20 54 48 45 20 52 |OLUTION IS THE R| 000006e0 49 47 48 54 20 4f 4e 45 20 41 4e 44 20 54 4f 20 |IGHT ONE AND TO | 000006f0 54 48 45 20 42 45 53 54 20 4f 46 20 4d 59 0d 4b |THE BEST OF MY.K| 00000700 4e 4f 57 4c 45 44 47 45 20 54 48 52 4f 57 49 4e |NOWLEDGE THROWIN| 00000710 47 20 54 48 45 20 4d 41 43 48 49 4e 45 20 49 4e |G THE MACHINE IN| 00000720 20 54 48 45 20 42 49 4e 20 48 41 53 20 4e 45 56 | THE BIN HAS NEV| 00000730 45 52 20 43 55 52 45 44 20 54 48 49 53 20 50 52 |ER CURED THIS PR| 00000740 4f 42 4c 45 4d 2e 0d 0d 4e 4f 57 20 49 20 48 41 |OBLEM...NOW I HA| 00000750 56 45 20 49 4e 20 54 48 45 20 50 41 53 54 20 42 |VE IN THE PAST B| 00000760 55 4c 4c 49 45 44 20 53 4f 4d 45 20 4d 45 4d 42 |ULLIED SOME MEMB| 00000770 45 52 53 20 57 48 4f 20 48 41 56 45 20 50 52 4f |ERS WHO HAVE PRO| 00000780 44 55 43 45 44 20 53 4f 46 54 57 41 52 45 0d 57 |DUCED SOFTWARE.W| 00000790 48 49 43 48 20 57 4f 55 4c 44 4e 27 54 20 52 55 |HICH WOULDN'T RU| 000007a0 4e 20 4f 4e 20 41 4e 20 55 4e 45 58 50 41 4e 44 |N ON AN UNEXPAND| 000007b0 45 44 20 45 4c 4b 20 42 55 54 20 54 48 49 53 20 |ED ELK BUT THIS | 000007c0 49 53 20 41 20 53 50 45 43 49 46 49 43 20 4d 4f |IS A SPECIFIC MO| 000007d0 44 45 20 37 20 49 54 45 4d 0d 41 4e 44 20 57 49 |DE 7 ITEM.AND WI| 000007e0 4c 4c 20 41 50 50 45 41 4c 20 54 4f 20 4d 41 4e |LL APPEAL TO MAN| 000007f0 59 20 42 42 43 20 41 4e 44 20 4d 41 53 54 45 52 |Y BBC AND MASTER| 00000800 20 55 53 49 4e 47 20 4d 45 4d 42 45 52 53 20 41 | USING MEMBERS A| 00000810 53 20 57 45 4c 4c 20 41 53 20 45 4c 4b 0d 4d 45 |S WELL AS ELK.ME| 00000820 4d 42 45 52 53 20 57 48 4f 20 48 41 56 45 20 4f |MBERS WHO HAVE O| 00000830 4e 45 20 4f 46 20 54 48 45 20 4d 4f 44 45 20 37 |NE OF THE MODE 7| 00000840 20 41 44 41 50 54 4f 52 53 2e 0d 0d 4d 49 43 52 | ADAPTORS...MICR| 00000850 4f 20 43 4f 4d 50 55 54 45 52 20 4d 41 52 54 20 |O COMPUTER MART | 00000860 49 53 20 41 20 4d 41 47 41 5a 49 4e 45 20 57 48 |IS A MAGAZINE WH| 00000870 49 43 48 20 49 53 20 50 55 42 4c 49 53 48 45 44 |ICH IS PUBLISHED| 00000880 20 45 56 45 52 59 20 57 45 45 4b 20 41 4e 44 0d | EVERY WEEK AND.| 00000890 43 41 52 52 49 45 53 20 41 44 56 45 52 54 53 20 |CARRIES ADVERTS | 000008a0 46 4f 52 20 53 45 43 4f 4e 44 20 48 41 4e 44 20 |FOR SECOND HAND | 000008b0 43 4f 4d 50 55 54 45 52 53 20 41 4e 44 20 43 4f |COMPUTERS AND CO| 000008c0 4d 50 55 54 45 52 20 53 55 50 50 4c 59 20 43 4f |MPUTER SUPPLY CO| 000008d0 4d 50 41 4e 49 45 53 0d 4d 41 49 4e 4c 59 20 50 |MPANIES.MAINLY P| 000008e0 43 27 73 20 42 55 54 20 4f 43 43 41 53 49 4f 4e |C's BUT OCCASION| 000008f0 41 4c 4c 59 20 53 4f 4d 45 20 38 20 42 49 54 20 |ALLY SOME 8 BIT | 00000900 49 4e 54 45 52 45 53 54 2e 20 49 4e 54 45 52 45 |INTEREST. INTERE| 00000910 53 54 49 4e 47 20 52 45 41 44 20 49 46 20 59 4f |STING READ IF YO| 00000920 55 0d 48 41 56 45 20 53 4f 4d 45 20 50 4f 43 4b |U.HAVE SOME POCK| 00000930 45 54 20 4d 4f 4e 45 59 20 4c 45 46 54 20 4f 56 |ET MONEY LEFT OV| 00000940 45 52 2e 0d 0d 54 48 45 20 4d 45 4e 55 20 4d 4f |ER...THE MENU MO| 00000950 44 49 46 49 43 41 54 49 4f 4e 53 20 59 4f 55 20 |DIFICATIONS YOU | 00000960 53 55 47 47 45 53 54 45 44 20 49 20 48 41 56 45 |SUGGESTED I HAVE| 00000970 20 53 45 4e 54 20 54 4f 20 52 49 43 48 41 52 44 | SENT TO RICHARD| 00000980 20 44 49 4d 4f 4e 44 20 46 4f 52 20 48 49 53 0d | DIMOND FOR HIS.| 00000990 4c 45 41 52 4e 45 44 20 4f 50 49 4e 49 4f 4e 2e |LEARNED OPINION.| 000009a0 20 49 20 4b 4e 4f 57 20 48 45 20 57 49 4c 4c 20 | I KNOW HE WILL | 000009b0 42 45 20 49 4e 54 45 52 45 53 54 45 44 20 54 4f |BE INTERESTED TO| 000009c0 20 53 45 45 20 54 48 45 4d 20 41 4e 44 20 57 49 | SEE THEM AND WI| 000009d0 4c 4c 0d 4e 4f 2d 44 4f 55 42 54 20 50 55 54 20 |LL.NO-DOUBT PUT | 000009e0 53 4f 4d 45 54 48 49 4e 47 20 49 4e 54 4f 20 54 |SOMETHING INTO T| 000009f0 48 45 20 4e 45 58 54 20 45 55 47 2e 0d |HE NEXT EUG..| 000009fd
L/Sprow1.m0
L/Sprow1.m1
L/Sprow1.m2
L/Sprow1.m4
L/Sprow1.m5
.