Home » Personal collection » Acorn ADFS disks » Electron_User_Group » EUG_27.ADF » P/+MOUSE1
P/+MOUSE1
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_27.ADF |
| Filename: | P/+MOUSE1 |
| Read OK: | ✔ |
| File size: | 099E bytes |
| Load address: | 2B204556 |
| Exec address: | 53554F4D |
File contents
�..>......*.......*.......*.......*.......*.......*.......*.......*.......*.<
6 Bollinbrook road,
MACCLESFIELD,
Cheshire.
SK10 3DJ.
Dear Mike Bellis,
All the mice I have ever seen for the BBC B and Master
series were user prort jobs.It is possible however to connect a serial
mouse to the RS423 port,and by altering the 5 pin BBC plug a little you
can fool the mouse into thinking it is connected to a 9 pin PC.
The next challenge is to work out what the numbers it sends do.That is
where I am stuck - the hardware was the easy part.
I have isolated the button status byte so I can at least tell which
buttons are pressed,and the remaining 4 bytes of the packet of 5 either
toggle between 00 for still of 01 or FF in hex.
The 5 byte packet is thus:
1.Button status (low 3 bits=buttons)
2.X1
3.Y1
4.X2
5.Y2
The adapter plug you'll need to make,as most serial mice come with 9
pin sockets on is:
Pin1 -> CONNECT TO PIN 4
Pin2 -> (A) DATA IN
Pin3 -> (B) DATA OUT
Pin4 -> CONNECT TO PIN 8
Pin5 -> (C) GND
Pin6 -> NC
Pin7 -> (D) RTS
Pin8 -> (E) CTS
Pin9 -> NC
I hope this is right as I can never remember which way round the
plug is printed on P504 of the user guide.
Sorry I didn't have time to draw a fancy diagram,but I have sent you
the BASIC software to read it.Perhaps machine code would allow us to see
some bytes tha BASIC is too slow to read.The Acorn RISC PC returned
values other than 00,01,FF which is why I question BASIC.
Let me know how you get on,if you need a cheap experimental mouse to
work as a guinea pig try:
CCL Computers
Tele 01274 664110
They accept switch over the phone and the BRAND NEW serial mouse I am
experimenting on cost `3.30 + VAT + P&P from them.
R.P.Sprowson.
----------------------------------------------------------
MOUSEY
======
Plug serial mouse into RS423 port.
Run the program.
Move the mouse to initialise the
display.
Puzzle about how on earth to write a
mouse driver.
Click a few buttons on the mouse and
watch the bits toggling on the top of
the screen.
Write the software and submit it to
EUG!
Happy computing,
R.P.Sprowson.
NOW THIS IS INTERESTING. I JUST HOPE THAT SOME EUG MEMBERS WILL TRY
THIS OUT AND SEND IN THEIR RESULTS FOR ALL TO READ.
00000000 81 2e 2e 3e 2e 2e 2e 2e 2e 2e 2a 2e 2e 2e 2e 2e |...>......*.....| 00000010 2e 2e 2a 2e 2e 2e 2e 2e 2e 2e 2a 2e 2e 2e 2e 2e |..*.......*.....| * 00000040 2e 2e 2a 2e 2e 2e 2e 2e 2e 2e 2a 2e 3c 0d 20 20 |..*.......*.<. | 00000050 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000060 20 36 20 42 6f 6c 6c 69 6e 62 72 6f 6f 6b 20 72 | 6 Bollinbrook r| 00000070 6f 61 64 2c 20 0d 20 20 20 20 20 20 20 20 20 20 |oad, . | 00000080 20 20 20 20 20 20 20 20 20 20 4d 41 43 43 4c 45 | MACCLE| 00000090 53 46 49 45 4c 44 2c 20 0d 20 20 20 20 20 20 20 |SFIELD, . | 000000a0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 43 68 | Ch| 000000b0 65 73 68 69 72 65 2e 20 0d 20 20 20 20 20 20 20 |eshire. . | 000000c0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 53 | S| 000000d0 4b 31 30 20 33 44 4a 2e 20 0d 20 0d 44 65 61 72 |K10 3DJ. . .Dear| 000000e0 20 4d 69 6b 65 20 42 65 6c 6c 69 73 2c 20 0d 20 | Mike Bellis, . | 000000f0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000100 41 6c 6c 20 74 68 65 20 6d 69 63 65 20 49 20 68 |All the mice I h| 00000110 61 76 65 20 20 65 76 65 72 20 73 65 65 6e 20 66 |ave ever seen f| 00000120 6f 72 20 74 68 65 20 42 42 43 20 42 20 61 6e 64 |or the BBC B and| 00000130 20 4d 61 73 74 65 72 20 0d 73 65 72 69 65 73 20 | Master .series | 00000140 77 65 72 65 20 75 73 65 72 20 70 72 6f 72 74 20 |were user prort | 00000150 6a 6f 62 73 2e 49 74 20 69 73 20 20 70 6f 73 73 |jobs.It is poss| 00000160 69 62 6c 65 20 68 6f 77 65 76 65 72 20 74 6f 20 |ible however to | 00000170 63 6f 6e 6e 65 63 74 20 61 20 73 65 72 69 61 6c |connect a serial| 00000180 20 0d 6d 6f 75 73 65 20 74 6f 20 74 68 65 20 52 | .mouse to the R| 00000190 53 34 32 33 20 70 6f 72 74 2c 61 6e 64 20 62 79 |S423 port,and by| 000001a0 20 20 61 6c 74 65 72 69 6e 67 20 74 68 65 20 35 | altering the 5| 000001b0 20 70 69 6e 20 42 42 43 20 70 6c 75 67 20 61 20 | pin BBC plug a | 000001c0 6c 69 74 74 6c 65 20 20 79 6f 75 0d 63 61 6e 20 |little you.can | 000001d0 66 6f 6f 6c 20 74 68 65 20 6d 6f 75 73 65 20 69 |fool the mouse i| 000001e0 6e 74 6f 20 74 68 69 6e 6b 69 6e 67 20 20 69 74 |nto thinking it| 000001f0 20 69 73 20 63 6f 6e 6e 65 63 74 65 64 20 74 6f | is connected to| 00000200 20 61 20 39 20 70 69 6e 20 50 43 2e 20 0d 0d 20 | a 9 pin PC. .. | 00000210 20 20 54 68 65 20 6e 65 78 74 20 63 68 61 6c 6c | The next chall| 00000220 65 6e 67 65 20 69 73 20 74 6f 20 77 6f 72 6b 20 |enge is to work | 00000230 6f 75 74 20 20 77 68 61 74 20 74 68 65 20 6e 75 |out what the nu| 00000240 6d 62 65 72 73 20 69 74 20 73 65 6e 64 73 20 64 |mbers it sends d| 00000250 6f 2e 54 68 61 74 20 69 73 20 0d 77 68 65 72 65 |o.That is .where| 00000260 20 49 20 61 6d 20 73 74 75 63 6b 20 2d 20 74 68 | I am stuck - th| 00000270 65 20 68 61 72 64 77 61 72 65 20 77 61 73 20 20 |e hardware was | 00000280 74 68 65 20 65 61 73 79 20 70 61 72 74 2e 20 0d |the easy part. .| 00000290 0d 20 20 20 49 20 68 61 76 65 20 69 73 6f 6c 61 |. I have isola| 000002a0 74 65 64 20 74 68 65 20 62 75 74 74 6f 6e 20 73 |ted the button s| 000002b0 74 61 74 75 73 20 20 62 79 74 65 20 73 6f 20 49 |tatus byte so I| 000002c0 20 63 61 6e 20 61 74 20 6c 65 61 73 74 20 74 65 | can at least te| 000002d0 6c 6c 20 77 68 69 63 68 20 0d 62 75 74 74 6f 6e |ll which .button| 000002e0 73 20 61 72 65 20 70 72 65 73 73 65 64 2c 61 6e |s are pressed,an| 000002f0 64 20 74 68 65 20 72 65 6d 61 69 6e 69 6e 67 20 |d the remaining | 00000300 20 34 20 62 79 74 65 73 20 6f 66 20 74 68 65 20 | 4 bytes of the | 00000310 70 61 63 6b 65 74 20 6f 66 20 35 20 65 69 74 68 |packet of 5 eith| 00000320 65 72 20 0d 74 6f 67 67 6c 65 20 62 65 74 77 65 |er .toggle betwe| 00000330 65 6e 20 30 30 20 66 6f 72 20 73 74 69 6c 6c 20 |en 00 for still | 00000340 6f 66 20 30 31 20 6f 72 20 20 46 46 20 69 6e 20 |of 01 or FF in | 00000350 68 65 78 2e 20 0d 0d 20 20 20 54 68 65 20 35 20 |hex. .. The 5 | 00000360 62 79 74 65 20 70 61 63 6b 65 74 20 69 73 20 74 |byte packet is t| 00000370 68 75 73 3a 20 0d 20 31 2e 42 75 74 74 6f 6e 20 |hus: . 1.Button | 00000380 73 74 61 74 75 73 20 28 6c 6f 77 20 33 20 62 69 |status (low 3 bi| 00000390 74 73 3d 62 75 74 74 6f 6e 73 29 20 0d 20 32 2e |ts=buttons) . 2.| 000003a0 58 31 20 0d 20 33 2e 59 31 20 0d 20 34 2e 58 32 |X1 . 3.Y1 . 4.X2| 000003b0 20 0d 20 35 2e 59 32 20 0d 20 0d 20 20 20 54 68 | . 5.Y2 . . Th| 000003c0 65 20 61 64 61 70 74 65 72 20 70 6c 75 67 20 79 |e adapter plug y| 000003d0 6f 75 27 6c 6c 20 6e 65 65 64 20 74 6f 20 20 6d |ou'll need to m| 000003e0 61 6b 65 2c 61 73 20 6d 6f 73 74 20 73 65 72 69 |ake,as most seri| 000003f0 61 6c 20 6d 69 63 65 20 63 6f 6d 65 20 77 69 74 |al mice come wit| 00000400 68 20 39 20 0d 70 69 6e 20 73 6f 63 6b 65 74 73 |h 9 .pin sockets| 00000410 20 6f 6e 20 69 73 3a 20 0d 0d 20 50 69 6e 31 20 | on is: .. Pin1 | 00000420 2d 3e 20 43 4f 4e 4e 45 43 54 20 54 4f 20 50 49 |-> CONNECT TO PI| 00000430 4e 20 34 20 0d 20 50 69 6e 32 20 2d 3e 20 28 41 |N 4 . Pin2 -> (A| 00000440 29 20 44 41 54 41 20 49 4e 20 0d 20 50 69 6e 33 |) DATA IN . Pin3| 00000450 20 2d 3e 20 28 42 29 20 44 41 54 41 20 4f 55 54 | -> (B) DATA OUT| 00000460 20 0d 20 50 69 6e 34 20 2d 3e 20 43 4f 4e 4e 45 | . Pin4 -> CONNE| 00000470 43 54 20 54 4f 20 50 49 4e 20 38 20 0d 20 50 69 |CT TO PIN 8 . Pi| 00000480 6e 35 20 2d 3e 20 28 43 29 20 47 4e 44 20 0d 20 |n5 -> (C) GND . | 00000490 50 69 6e 36 20 2d 3e 20 4e 43 20 0d 20 50 69 6e |Pin6 -> NC . Pin| 000004a0 37 20 2d 3e 20 28 44 29 20 52 54 53 20 0d 20 50 |7 -> (D) RTS . P| 000004b0 69 6e 38 20 2d 3e 20 28 45 29 20 43 54 53 20 0d |in8 -> (E) CTS .| 000004c0 20 50 69 6e 39 20 2d 3e 20 4e 43 20 0d 0d 20 20 | Pin9 -> NC .. | 000004d0 20 49 20 68 6f 70 65 20 74 68 69 73 20 69 73 20 | I hope this is | 000004e0 72 69 67 68 74 20 61 73 20 49 20 63 61 6e 20 20 |right as I can | 000004f0 20 6e 65 76 65 72 20 72 65 6d 65 6d 62 65 72 20 | never remember | 00000500 77 68 69 63 68 20 77 61 79 20 72 6f 75 6e 64 20 |which way round | 00000510 74 68 65 20 0d 70 6c 75 67 20 69 73 20 70 72 69 |the .plug is pri| 00000520 6e 74 65 64 20 6f 6e 20 50 35 30 34 20 6f 66 20 |nted on P504 of | 00000530 74 68 65 20 75 73 65 72 20 20 67 75 69 64 65 2e |the user guide.| 00000540 20 0d 0d 20 20 20 53 6f 72 72 79 20 49 20 64 69 | .. Sorry I di| 00000550 64 6e 27 74 20 68 61 76 65 20 74 69 6d 65 20 74 |dn't have time t| 00000560 6f 20 64 72 61 77 20 61 20 20 66 61 6e 63 79 20 |o draw a fancy | 00000570 64 69 61 67 72 61 6d 2c 62 75 74 20 49 20 68 61 |diagram,but I ha| 00000580 76 65 20 73 65 6e 74 20 79 6f 75 0d 74 68 65 20 |ve sent you.the | 00000590 20 42 41 53 49 43 20 73 6f 66 74 77 61 72 65 20 | BASIC software | 000005a0 74 6f 20 72 65 61 64 20 69 74 2e 50 65 72 68 61 |to read it.Perha| 000005b0 70 73 20 20 6d 61 63 68 69 6e 65 20 63 6f 64 65 |ps machine code| 000005c0 20 77 6f 75 6c 64 20 61 6c 6c 6f 77 20 75 73 20 | would allow us | 000005d0 74 6f 20 73 65 65 20 0d 73 6f 6d 65 20 62 79 74 |to see .some byt| 000005e0 65 73 20 74 68 61 20 42 41 53 49 43 20 69 73 20 |es tha BASIC is | 000005f0 74 6f 6f 20 73 6c 6f 77 20 74 6f 20 20 72 65 61 |too slow to rea| 00000600 64 2e 54 68 65 20 41 63 6f 72 6e 20 52 49 53 43 |d.The Acorn RISC| 00000610 20 50 43 20 72 65 74 75 72 6e 65 64 0d 76 61 6c | PC returned.val| 00000620 75 65 73 20 20 6f 74 68 65 72 20 74 68 61 6e 20 |ues other than | 00000630 30 30 2c 30 31 2c 46 46 20 77 68 69 63 68 20 69 |00,01,FF which i| 00000640 73 20 77 68 79 20 49 20 20 71 75 65 73 74 69 6f |s why I questio| 00000650 6e 20 42 41 53 49 43 2e 20 0d 0d 20 20 20 4c 65 |n BASIC. .. Le| 00000660 74 20 6d 65 20 6b 6e 6f 77 20 68 6f 77 20 79 6f |t me know how yo| 00000670 75 20 67 65 74 20 6f 6e 2c 69 66 20 79 6f 75 20 |u get on,if you | 00000680 20 6e 65 65 64 20 61 20 63 68 65 61 70 20 65 78 | need a cheap ex| 00000690 70 65 72 69 6d 65 6e 74 61 6c 20 6d 6f 75 73 65 |perimental mouse| 000006a0 20 74 6f 20 0d 77 6f 72 6b 20 61 73 20 61 20 67 | to .work as a g| 000006b0 75 69 6e 65 61 20 70 69 67 20 74 72 79 3a 20 0d |uinea pig try: .| 000006c0 0d 20 20 43 43 4c 20 43 6f 6d 70 75 74 65 72 73 |. CCL Computers| 000006d0 20 0d 20 20 54 65 6c 65 20 30 31 32 37 34 20 36 | . Tele 01274 6| 000006e0 36 34 31 31 30 20 0d 0d 54 68 65 79 20 61 63 63 |64110 ..They acc| 000006f0 65 70 74 20 73 77 69 74 63 68 20 6f 76 65 72 20 |ept switch over | 00000700 74 68 65 20 70 68 6f 6e 65 20 61 6e 64 20 20 74 |the phone and t| 00000710 68 65 20 42 52 41 4e 44 20 4e 45 57 20 73 65 72 |he BRAND NEW ser| 00000720 69 61 6c 20 6d 6f 75 73 65 20 49 20 61 6d 20 0d |ial mouse I am .| 00000730 65 78 70 65 72 69 6d 65 6e 74 69 6e 67 20 6f 6e |experimenting on| 00000740 20 63 6f 73 74 20 60 33 2e 33 30 20 2b 20 56 41 | cost `3.30 + VA| 00000750 54 20 2b 20 20 50 26 50 20 66 72 6f 6d 20 74 68 |T + P&P from th| 00000760 65 6d 2e 20 0d 0d 20 20 20 20 20 20 20 20 20 20 |em. .. | 00000770 20 20 20 20 52 2e 50 2e 53 70 72 6f 77 73 6f 6e | R.P.Sprowson| 00000780 2e 20 0d 20 0d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |. . .-----------| 00000790 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| * 000007b0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0d |---------------.| 000007c0 4d 4f 55 53 45 59 20 0d 3d 3d 3d 3d 3d 3d 20 0d |MOUSEY .====== .| 000007d0 50 6c 75 67 20 73 65 72 69 61 6c 20 6d 6f 75 73 |Plug serial mous| 000007e0 65 20 69 6e 74 6f 20 52 53 34 32 33 20 70 6f 72 |e into RS423 por| 000007f0 74 2e 20 0d 52 75 6e 20 74 68 65 20 70 72 6f 67 |t. .Run the prog| 00000800 72 61 6d 2e 20 0d 4d 6f 76 65 20 74 68 65 20 6d |ram. .Move the m| 00000810 6f 75 73 65 20 74 6f 20 69 6e 69 74 69 61 6c 69 |ouse to initiali| 00000820 73 65 20 74 68 65 20 0d 64 69 73 70 6c 61 79 2e |se the .display.| 00000830 20 0d 50 75 7a 7a 6c 65 20 61 62 6f 75 74 20 68 | .Puzzle about h| 00000840 6f 77 20 6f 6e 20 65 61 72 74 68 20 74 6f 20 77 |ow on earth to w| 00000850 72 69 74 65 20 61 20 20 0d 6d 6f 75 73 65 20 64 |rite a .mouse d| 00000860 72 69 76 65 72 2e 20 0d 43 6c 69 63 6b 20 61 20 |river. .Click a | 00000870 66 65 77 20 62 75 74 74 6f 6e 73 20 6f 6e 20 74 |few buttons on t| 00000880 68 65 20 6d 6f 75 73 65 20 61 6e 64 20 0d 77 61 |he mouse and .wa| 00000890 74 63 68 20 74 68 65 20 62 69 74 73 20 74 6f 67 |tch the bits tog| 000008a0 67 6c 69 6e 67 20 6f 6e 20 74 68 65 20 74 6f 70 |gling on the top| 000008b0 20 6f 66 20 0d 74 68 65 20 73 63 72 65 65 6e 2e | of .the screen.| 000008c0 20 0d 57 72 69 74 65 20 74 68 65 20 73 6f 66 74 | .Write the soft| 000008d0 77 61 72 65 20 61 6e 64 20 73 75 62 6d 69 74 20 |ware and submit | 000008e0 69 74 20 74 6f 20 0d 45 55 47 21 20 0d 20 20 20 |it to .EUG! . | 000008f0 20 0d 48 61 70 70 79 20 63 6f 6d 70 75 74 69 6e | .Happy computin| 00000900 67 2c 20 0d 20 20 20 20 20 20 20 20 20 20 20 20 |g, . | 00000910 20 20 20 20 52 2e 50 2e 53 70 72 6f 77 73 6f 6e | R.P.Sprowson| 00000920 2e 20 0d 20 0d 4e 4f 57 20 54 48 49 53 20 49 53 |. . .NOW THIS IS| 00000930 20 49 4e 54 45 52 45 53 54 49 4e 47 2e 20 49 20 | INTERESTING. I | 00000940 4a 55 53 54 20 48 4f 50 45 20 54 48 41 54 20 53 |JUST HOPE THAT S| 00000950 4f 4d 45 20 45 55 47 20 4d 45 4d 42 45 52 53 20 |OME EUG MEMBERS | 00000960 57 49 4c 4c 20 54 52 59 20 0d 54 48 49 53 20 4f |WILL TRY .THIS O| 00000970 55 54 20 41 4e 44 20 53 45 4e 44 20 49 4e 20 54 |UT AND SEND IN T| 00000980 48 45 49 52 20 52 45 53 55 4c 54 53 20 46 4f 52 |HEIR RESULTS FOR| 00000990 20 41 4c 4c 20 54 4f 20 52 45 41 44 2e 0d | ALL TO READ..| 0000099e
P/+MOUSE1.m0
P/+MOUSE1.m1
P/+MOUSE1.m2
P/+MOUSE1.m4
P/+MOUSE1.m5
.