Home » Archimedes archive » Acorn User » AU 1998-09.adf » Regulars » RTR/!LScope/!Help
RTR/!LScope/!Help
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 » Archimedes archive » Acorn User » AU 1998-09.adf » Regulars |
| Filename: | RTR/!LScope/!Help |
| Read OK: | ✔ |
| File size: | 06D7 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
Logic Scope V1.0 Copyright Mike Cook - Musbury Consultants all rights reserved Tel. 01706 216701 5 Helmshore Rd, Haslingden, Rossendale, Lancs. BB4 4BG Realtime logic oscilloscope - Measures Printer Port bits This software is described in the September 98 issue of Acorn User. X Scale The first 4 buttons set the application to read in 344 samples at a time. Sucessive buttons after this double the number of samples taken per sweep. These are:- 688, 1376 and 2752. Note at these higher sample rates the multitasking can be a bit slugish. You can always use the X shift slider to examin the whole 2752 sample buffer, however, if you have not read in this much the rest of the buffer may be meaningless. The whole buffer may be reset using the "wipe" button. To measure the time between two points on a waveform:- 1) Click adjust on the first point, a line will be drawn, this is the refrance point. 2) Click select on the second point, the time between these points will be measured. 3) Repeted select clicks will show the distance in time. 4) A second adjust click will remove the refrance point. Click Select on the blue boxes to set the trigger value:- 0 - Trigger on logic zero 1 - Trigger on logic one X - Do not consider this bit in the trigger conditions. Click Adjust on the blue boxes to set the analysis channel. Then the next logic change on that channel will be shown in mS or samples. The up button next to this will move the display to:- a) The next logic change if you click with select. b) The last logic change if you click with adjust. Setting the 'Input Clock' to External will clock in data on the falling edge of the Busy line of the printer port. Using this option halves the maximum input clock rate to 5uS per sample.
00000000 4c 6f 67 69 63 20 53 63 6f 70 65 20 56 31 2e 30 |Logic Scope V1.0| 00000010 20 43 6f 70 79 72 69 67 68 74 20 4d 69 6b 65 20 | Copyright Mike | 00000020 43 6f 6f 6b 20 2d 20 4d 75 73 62 75 72 79 20 43 |Cook - Musbury C| 00000030 6f 6e 73 75 6c 74 61 6e 74 73 20 61 6c 6c 20 72 |onsultants all r| 00000040 69 67 68 74 73 20 0a 72 65 73 65 72 76 65 64 20 |ights .reserved | 00000050 0a 0a 54 65 6c 2e 20 30 31 37 30 36 20 32 31 36 |..Tel. 01706 216| 00000060 37 30 31 0a 35 20 48 65 6c 6d 73 68 6f 72 65 20 |701.5 Helmshore | 00000070 52 64 2c 0a 48 61 73 6c 69 6e 67 64 65 6e 2c 0a |Rd,.Haslingden,.| 00000080 52 6f 73 73 65 6e 64 61 6c 65 2c 0a 4c 61 6e 63 |Rossendale,.Lanc| 00000090 73 2e 0a 42 42 34 20 34 42 47 0a 0a 52 65 61 6c |s..BB4 4BG..Real| 000000a0 74 69 6d 65 20 6c 6f 67 69 63 20 6f 73 63 69 6c |time logic oscil| 000000b0 6c 6f 73 63 6f 70 65 20 2d 20 4d 65 61 73 75 72 |loscope - Measur| 000000c0 65 73 20 50 72 69 6e 74 65 72 20 50 6f 72 74 20 |es Printer Port | 000000d0 62 69 74 73 0a 54 68 69 73 20 73 6f 66 74 77 61 |bits.This softwa| 000000e0 72 65 20 69 73 20 64 65 73 63 72 69 62 65 64 20 |re is described | 000000f0 69 6e 20 74 68 65 20 53 65 70 74 65 6d 62 65 72 |in the September| 00000100 20 39 38 20 69 73 73 75 65 20 6f 66 20 41 63 6f | 98 issue of Aco| 00000110 72 6e 20 55 73 65 72 2e 0a 0a 58 20 53 63 61 6c |rn User...X Scal| 00000120 65 0a 54 68 65 20 66 69 72 73 74 20 34 20 62 75 |e.The first 4 bu| 00000130 74 74 6f 6e 73 20 73 65 74 20 74 68 65 20 61 70 |ttons set the ap| 00000140 70 6c 69 63 61 74 69 6f 6e 20 74 6f 20 72 65 61 |plication to rea| 00000150 64 20 69 6e 20 33 34 34 20 73 61 6d 70 6c 65 73 |d in 344 samples| 00000160 20 61 74 20 61 20 74 69 6d 65 2e 0a 53 75 63 65 | at a time..Suce| 00000170 73 73 69 76 65 20 62 75 74 74 6f 6e 73 20 61 66 |ssive buttons af| 00000180 74 65 72 20 74 68 69 73 20 64 6f 75 62 6c 65 20 |ter this double | 00000190 74 68 65 20 6e 75 6d 62 65 72 20 6f 66 20 73 61 |the number of sa| 000001a0 6d 70 6c 65 73 20 74 61 6b 65 6e 20 70 65 72 20 |mples taken per | 000001b0 73 77 65 65 70 2e 0a 54 68 65 73 65 20 61 72 65 |sweep..These are| 000001c0 3a 2d 20 36 38 38 2c 20 31 33 37 36 20 61 6e 64 |:- 688, 1376 and| 000001d0 20 32 37 35 32 2e 0a 4e 6f 74 65 20 61 74 20 74 | 2752..Note at t| 000001e0 68 65 73 65 20 68 69 67 68 65 72 20 73 61 6d 70 |hese higher samp| 000001f0 6c 65 20 72 61 74 65 73 20 74 68 65 20 6d 75 6c |le rates the mul| 00000200 74 69 74 61 73 6b 69 6e 67 20 63 61 6e 20 62 65 |titasking can be| 00000210 20 61 20 62 69 74 20 73 6c 75 67 69 73 68 2e 0a | a bit slugish..| 00000220 59 6f 75 20 63 61 6e 20 61 6c 77 61 79 73 20 75 |You can always u| 00000230 73 65 20 74 68 65 20 58 20 73 68 69 66 74 20 73 |se the X shift s| 00000240 6c 69 64 65 72 20 74 6f 20 65 78 61 6d 69 6e 20 |lider to examin | 00000250 74 68 65 20 77 68 6f 6c 65 20 32 37 35 32 20 73 |the whole 2752 s| 00000260 61 6d 70 6c 65 20 62 75 66 66 65 72 2c 0a 68 6f |ample buffer,.ho| 00000270 77 65 76 65 72 2c 20 69 66 20 79 6f 75 20 68 61 |wever, if you ha| 00000280 76 65 20 6e 6f 74 20 72 65 61 64 20 69 6e 20 74 |ve not read in t| 00000290 68 69 73 20 6d 75 63 68 20 74 68 65 20 72 65 73 |his much the res| 000002a0 74 20 6f 66 20 74 68 65 20 62 75 66 66 65 72 20 |t of the buffer | 000002b0 6d 61 79 20 62 65 20 6d 65 61 6e 69 6e 67 6c 65 |may be meaningle| 000002c0 73 73 2e 0a 54 68 65 20 77 68 6f 6c 65 20 62 75 |ss..The whole bu| 000002d0 66 66 65 72 20 6d 61 79 20 62 65 20 72 65 73 65 |ffer may be rese| 000002e0 74 20 75 73 69 6e 67 20 74 68 65 20 22 77 69 70 |t using the "wip| 000002f0 65 22 20 62 75 74 74 6f 6e 2e 0a 0a 54 6f 20 6d |e" button...To m| 00000300 65 61 73 75 72 65 20 74 68 65 20 74 69 6d 65 20 |easure the time | 00000310 62 65 74 77 65 65 6e 20 74 77 6f 20 70 6f 69 6e |between two poin| 00000320 74 73 20 6f 6e 20 61 20 77 61 76 65 66 6f 72 6d |ts on a waveform| 00000330 3a 2d 0a 31 29 20 43 6c 69 63 6b 20 61 64 6a 75 |:-.1) Click adju| 00000340 73 74 20 6f 6e 20 74 68 65 20 66 69 72 73 74 20 |st on the first | 00000350 70 6f 69 6e 74 2c 20 61 20 6c 69 6e 65 20 77 69 |point, a line wi| 00000360 6c 6c 20 62 65 20 64 72 61 77 6e 2c 20 74 68 69 |ll be drawn, thi| 00000370 73 20 69 73 20 74 68 65 20 72 65 66 72 61 6e 63 |s is the refranc| 00000380 65 20 70 6f 69 6e 74 2e 0a 32 29 20 43 6c 69 63 |e point..2) Clic| 00000390 6b 20 73 65 6c 65 63 74 20 6f 6e 20 74 68 65 20 |k select on the | 000003a0 73 65 63 6f 6e 64 20 70 6f 69 6e 74 2c 20 74 68 |second point, th| 000003b0 65 20 74 69 6d 65 20 62 65 74 77 65 65 6e 20 74 |e time between t| 000003c0 68 65 73 65 20 70 6f 69 6e 74 73 20 77 69 6c 6c |hese points will| 000003d0 20 62 65 20 6d 65 61 73 75 72 65 64 2e 0a 33 29 | be measured..3)| 000003e0 20 52 65 70 65 74 65 64 20 73 65 6c 65 63 74 20 | Repeted select | 000003f0 63 6c 69 63 6b 73 20 77 69 6c 6c 20 73 68 6f 77 |clicks will show| 00000400 20 74 68 65 20 64 69 73 74 61 6e 63 65 20 69 6e | the distance in| 00000410 20 74 69 6d 65 2e 0a 34 29 20 41 20 73 65 63 6f | time..4) A seco| 00000420 6e 64 20 61 64 6a 75 73 74 20 63 6c 69 63 6b 20 |nd adjust click | 00000430 77 69 6c 6c 20 72 65 6d 6f 76 65 20 74 68 65 20 |will remove the | 00000440 72 65 66 72 61 6e 63 65 20 70 6f 69 6e 74 2e 0a |refrance point..| 00000450 0a 43 6c 69 63 6b 20 53 65 6c 65 63 74 20 6f 6e |.Click Select on| 00000460 20 74 68 65 20 62 6c 75 65 20 62 6f 78 65 73 20 | the blue boxes | 00000470 74 6f 20 73 65 74 20 74 68 65 20 74 72 69 67 67 |to set the trigg| 00000480 65 72 20 76 61 6c 75 65 3a 2d 0a 30 20 2d 20 54 |er value:-.0 - T| 00000490 72 69 67 67 65 72 20 6f 6e 20 6c 6f 67 69 63 20 |rigger on logic | 000004a0 7a 65 72 6f 0a 31 20 2d 20 54 72 69 67 67 65 72 |zero.1 - Trigger| 000004b0 20 6f 6e 20 6c 6f 67 69 63 20 6f 6e 65 0a 58 20 | on logic one.X | 000004c0 2d 20 44 6f 20 6e 6f 74 20 63 6f 6e 73 69 64 65 |- Do not conside| 000004d0 72 20 74 68 69 73 20 62 69 74 20 69 6e 20 74 68 |r this bit in th| 000004e0 65 20 74 72 69 67 67 65 72 20 63 6f 6e 64 69 74 |e trigger condit| 000004f0 69 6f 6e 73 2e 0a 0a 43 6c 69 63 6b 20 41 64 6a |ions...Click Adj| 00000500 75 73 74 20 6f 6e 20 74 68 65 20 62 6c 75 65 20 |ust on the blue | 00000510 62 6f 78 65 73 20 74 6f 20 73 65 74 20 74 68 65 |boxes to set the| 00000520 20 61 6e 61 6c 79 73 69 73 20 63 68 61 6e 6e 65 | analysis channe| 00000530 6c 2e 0a 54 68 65 6e 20 74 68 65 20 6e 65 78 74 |l..Then the next| 00000540 20 6c 6f 67 69 63 20 63 68 61 6e 67 65 20 6f 6e | logic change on| 00000550 20 74 68 61 74 20 63 68 61 6e 6e 65 6c 20 77 69 | that channel wi| 00000560 6c 6c 20 62 65 20 73 68 6f 77 6e 20 69 6e 20 6d |ll be shown in m| 00000570 53 20 6f 72 20 73 61 6d 70 6c 65 73 2e 0a 54 68 |S or samples..Th| 00000580 65 20 75 70 20 62 75 74 74 6f 6e 20 6e 65 78 74 |e up button next| 00000590 20 74 6f 20 74 68 69 73 20 77 69 6c 6c 20 6d 6f | to this will mo| 000005a0 76 65 20 74 68 65 20 64 69 73 70 6c 61 79 20 74 |ve the display t| 000005b0 6f 3a 2d 0a 61 29 20 54 68 65 20 6e 65 78 74 20 |o:-.a) The next | 000005c0 6c 6f 67 69 63 20 63 68 61 6e 67 65 20 69 66 20 |logic change if | 000005d0 79 6f 75 20 63 6c 69 63 6b 20 77 69 74 68 20 73 |you click with s| 000005e0 65 6c 65 63 74 2e 0a 62 29 20 54 68 65 20 6c 61 |elect..b) The la| 000005f0 73 74 20 6c 6f 67 69 63 20 63 68 61 6e 67 65 20 |st logic change | 00000600 69 66 20 79 6f 75 20 63 6c 69 63 6b 20 77 69 74 |if you click wit| 00000610 68 20 61 64 6a 75 73 74 2e 0a 0a 53 65 74 74 69 |h adjust...Setti| 00000620 6e 67 20 74 68 65 20 27 49 6e 70 75 74 20 43 6c |ng the 'Input Cl| 00000630 6f 63 6b 27 20 74 6f 20 45 78 74 65 72 6e 61 6c |ock' to External| 00000640 20 77 69 6c 6c 20 63 6c 6f 63 6b 20 69 6e 20 64 | will clock in d| 00000650 61 74 61 20 6f 6e 20 74 68 65 20 66 61 6c 6c 69 |ata on the falli| 00000660 6e 67 20 65 64 67 65 20 6f 66 0a 74 68 65 20 42 |ng edge of.the B| 00000670 75 73 79 20 6c 69 6e 65 20 6f 66 20 74 68 65 20 |usy line of the | 00000680 70 72 69 6e 74 65 72 20 70 6f 72 74 2e 20 55 73 |printer port. Us| 00000690 69 6e 67 20 74 68 69 73 20 6f 70 74 69 6f 6e 20 |ing this option | 000006a0 68 61 6c 76 65 73 20 74 68 65 20 6d 61 78 69 6d |halves the maxim| 000006b0 75 6d 20 69 6e 70 75 74 20 63 6c 6f 63 6b 0a 72 |um input clock.r| 000006c0 61 74 65 20 74 6f 20 35 75 53 20 70 65 72 20 73 |ate to 5uS per s| 000006d0 61 6d 70 6c 65 2e 0a |ample..| 000006d7
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