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AtapiFix
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 » Archimedes World » AW-1996-10.adf » !SampleCD_SampCD |
| Filename: | AtapiFix |
| Read OK: | ✔ |
| File size: | 06F7 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
dp11@unix.york.ac.uk (D Plunkett)
CDFSsoftATAPI v.1.23 bug Fix
20 Apr 1996 12:40:23 GMT The University of York, UK
Newsgroups:
comp.sys.acorn.programmer
Hello
After a little work I have a Bug Fix for CDFSsoftATAPI v.1.23 (31 Mar 1995)
(RISCOS 3.6 version). I am not sure if the bug is the fault of my six speed
Aztech CDROM or the module, but one of them is not truely ATAPI!!
This small change fixes two bugs
1) "Compact disc Faulty " error with any data CDROM on the aztech drive.
2) " Not an audio track" error. This mainly occurs with sampleCD
The bug is in the CD_SetParameters code. This fix prevent the errors being
generated. The actual error is generated much lower down in the code &1598.
This piece of code is used by mamy other CD_ SWI's so it cannot be changed here.
This fixes is not the best solution to the problem but it seams to work.
Using !ZAP get the module and goto &484 change the BVS &8D0 to MOV R0,R0.
Save the Module to !boot.choices.boot.PreDesk
Reboot machine
All should now be okay.
I still have a problem with large files eg. >490k. When I drag a JPEG to
!changeFSI the JPEG will be corrupt. When I copy the JPEG to harddisc and
then to !changeFSI it will be okay. This is not effected by changing the
buffersize.
When using SampleCD I find I have to use the following sequence :
Click on Play
Set Start (0 00:00:00 does not seam to be valid)
set Length
Click on stop and then wait
Drag icon to disc
This fix has only be tested on my machine with my hardware! It might not work
for you.
There does seam to be a verison 1.30e floating about but it also has the same
errors for me.
CDspeed thinks it can get 1.367Mbytes/second off my CDROM !!
Hope this will help some people
Dominic
00000000 64 70 31 31 40 75 6e 69 78 2e 79 6f 72 6b 2e 61 |dp11@unix.york.a| 00000010 63 2e 75 6b 20 28 44 20 50 6c 75 6e 6b 65 74 74 |c.uk (D Plunkett| 00000020 29 20 0a 0a 43 44 46 53 73 6f 66 74 41 54 41 50 |) ..CDFSsoftATAP| 00000030 49 20 76 2e 31 2e 32 33 20 62 75 67 20 46 69 78 |I v.1.23 bug Fix| 00000040 0a 0a 32 30 20 41 70 72 20 31 39 39 36 20 31 32 |..20 Apr 1996 12| 00000050 3a 34 30 3a 32 33 20 47 4d 54 20 54 68 65 20 55 |:40:23 GMT The U| 00000060 6e 69 76 65 72 73 69 74 79 20 6f 66 20 59 6f 72 |niversity of Yor| 00000070 6b 2c 20 55 4b 20 0a 0a 4e 65 77 73 67 72 6f 75 |k, UK ..Newsgrou| 00000080 70 73 3a 20 0a 20 20 20 63 6f 6d 70 2e 73 79 73 |ps: . comp.sys| 00000090 2e 61 63 6f 72 6e 2e 70 72 6f 67 72 61 6d 6d 65 |.acorn.programme| 000000a0 72 20 0a 0a 48 65 6c 6c 6f 0a 0a 41 66 74 65 72 |r ..Hello..After| 000000b0 20 61 20 6c 69 74 74 6c 65 20 77 6f 72 6b 20 49 | a little work I| 000000c0 20 68 61 76 65 20 61 20 42 75 67 20 46 69 78 20 | have a Bug Fix | 000000d0 66 6f 72 20 43 44 46 53 73 6f 66 74 41 54 41 50 |for CDFSsoftATAP| 000000e0 49 20 76 2e 31 2e 32 33 20 28 33 31 20 4d 61 72 |I v.1.23 (31 Mar| 000000f0 20 31 39 39 35 29 0a 28 52 49 53 43 4f 53 20 33 | 1995).(RISCOS 3| 00000100 2e 36 20 76 65 72 73 69 6f 6e 29 2e 20 49 20 61 |.6 version). I a| 00000110 6d 20 6e 6f 74 20 73 75 72 65 20 69 66 20 74 68 |m not sure if th| 00000120 65 20 62 75 67 20 69 73 20 74 68 65 20 66 61 75 |e bug is the fau| 00000130 6c 74 20 6f 66 20 6d 79 20 73 69 78 20 73 70 65 |lt of my six spe| 00000140 65 64 0a 41 7a 74 65 63 68 20 43 44 52 4f 4d 20 |ed.Aztech CDROM | 00000150 6f 72 20 74 68 65 20 6d 6f 64 75 6c 65 2c 20 62 |or the module, b| 00000160 75 74 20 6f 6e 65 20 6f 66 20 74 68 65 6d 20 69 |ut one of them i| 00000170 73 20 6e 6f 74 20 74 72 75 65 6c 79 20 41 54 41 |s not truely ATA| 00000180 50 49 21 21 0a 0a 54 68 69 73 20 73 6d 61 6c 6c |PI!!..This small| 00000190 20 63 68 61 6e 67 65 20 66 69 78 65 73 20 74 77 | change fixes tw| 000001a0 6f 20 62 75 67 73 20 0a 0a 31 29 20 22 43 6f 6d |o bugs ..1) "Com| 000001b0 70 61 63 74 20 64 69 73 63 20 46 61 75 6c 74 79 |pact disc Faulty| 000001c0 20 22 20 65 72 72 6f 72 20 77 69 74 68 20 61 6e | " error with an| 000001d0 79 20 64 61 74 61 20 43 44 52 4f 4d 20 6f 6e 20 |y data CDROM on | 000001e0 74 68 65 20 61 7a 74 65 63 68 20 64 72 69 76 65 |the aztech drive| 000001f0 2e 0a 0a 32 29 20 22 20 4e 6f 74 20 61 6e 20 61 |...2) " Not an a| 00000200 75 64 69 6f 20 74 72 61 63 6b 22 20 65 72 72 6f |udio track" erro| 00000210 72 2e 20 54 68 69 73 20 6d 61 69 6e 6c 79 20 6f |r. This mainly o| 00000220 63 63 75 72 73 20 77 69 74 68 20 73 61 6d 70 6c |ccurs with sampl| 00000230 65 43 44 0a 0a 54 68 65 20 62 75 67 20 69 73 20 |eCD..The bug is | 00000240 69 6e 20 74 68 65 20 43 44 5f 53 65 74 50 61 72 |in the CD_SetPar| 00000250 61 6d 65 74 65 72 73 20 63 6f 64 65 2e 20 54 68 |ameters code. Th| 00000260 69 73 20 66 69 78 20 70 72 65 76 65 6e 74 20 74 |is fix prevent t| 00000270 68 65 20 65 72 72 6f 72 73 20 62 65 69 6e 67 20 |he errors being | 00000280 0a 67 65 6e 65 72 61 74 65 64 2e 20 54 68 65 20 |.generated. The | 00000290 61 63 74 75 61 6c 20 65 72 72 6f 72 20 69 73 20 |actual error is | 000002a0 67 65 6e 65 72 61 74 65 64 20 6d 75 63 68 20 6c |generated much l| 000002b0 6f 77 65 72 20 64 6f 77 6e 20 69 6e 20 74 68 65 |ower down in the| 000002c0 20 63 6f 64 65 20 26 31 35 39 38 2e 0a 54 68 69 | code &1598..Thi| 000002d0 73 20 70 69 65 63 65 20 6f 66 20 63 6f 64 65 20 |s piece of code | 000002e0 69 73 20 75 73 65 64 20 62 79 20 6d 61 6d 79 20 |is used by mamy | 000002f0 6f 74 68 65 72 20 43 44 5f 20 53 57 49 27 73 20 |other CD_ SWI's | 00000300 73 6f 20 69 74 20 63 61 6e 6e 6f 74 20 62 65 20 |so it cannot be | 00000310 63 68 61 6e 67 65 64 20 68 65 72 65 2e 0a 54 68 |changed here..Th| 00000320 69 73 20 66 69 78 65 73 20 69 73 20 6e 6f 74 20 |is fixes is not | 00000330 74 68 65 20 62 65 73 74 20 73 6f 6c 75 74 69 6f |the best solutio| 00000340 6e 20 74 6f 20 74 68 65 20 70 72 6f 62 6c 65 6d |n to the problem| 00000350 20 62 75 74 20 69 74 20 73 65 61 6d 73 20 74 6f | but it seams to| 00000360 20 77 6f 72 6b 2e 0a 0a 55 73 69 6e 67 20 21 5a | work...Using !Z| 00000370 41 50 20 67 65 74 20 74 68 65 20 6d 6f 64 75 6c |AP get the modul| 00000380 65 20 61 6e 64 20 67 6f 74 6f 20 26 34 38 34 20 |e and goto &484 | 00000390 63 68 61 6e 67 65 20 74 68 65 20 42 56 53 20 26 |change the BVS &| 000003a0 38 44 30 20 74 6f 20 4d 4f 56 20 52 30 2c 52 30 |8D0 to MOV R0,R0| 000003b0 2e 0a 53 61 76 65 20 74 68 65 20 4d 6f 64 75 6c |..Save the Modul| 000003c0 65 20 74 6f 20 21 62 6f 6f 74 2e 63 68 6f 69 63 |e to !boot.choic| 000003d0 65 73 2e 62 6f 6f 74 2e 50 72 65 44 65 73 6b 0a |es.boot.PreDesk.| 000003e0 52 65 62 6f 6f 74 20 6d 61 63 68 69 6e 65 20 0a |Reboot machine .| 000003f0 41 6c 6c 20 73 68 6f 75 6c 64 20 6e 6f 77 20 62 |All should now b| 00000400 65 20 6f 6b 61 79 2e 0a 0a 49 20 73 74 69 6c 6c |e okay...I still| 00000410 20 68 61 76 65 20 61 20 70 72 6f 62 6c 65 6d 20 | have a problem | 00000420 77 69 74 68 20 6c 61 72 67 65 20 66 69 6c 65 73 |with large files| 00000430 20 65 67 2e 20 3e 34 39 30 6b 2e 20 57 68 65 6e | eg. >490k. When| 00000440 20 49 20 64 72 61 67 20 61 20 4a 50 45 47 20 74 | I drag a JPEG t| 00000450 6f 0a 21 63 68 61 6e 67 65 46 53 49 20 74 68 65 |o.!changeFSI the| 00000460 20 4a 50 45 47 20 77 69 6c 6c 20 62 65 20 63 6f | JPEG will be co| 00000470 72 72 75 70 74 2e 20 57 68 65 6e 20 49 20 63 6f |rrupt. When I co| 00000480 70 79 20 74 68 65 20 4a 50 45 47 20 74 6f 20 68 |py the JPEG to h| 00000490 61 72 64 64 69 73 63 20 61 6e 64 20 0a 74 68 65 |arddisc and .the| 000004a0 6e 20 74 6f 20 21 63 68 61 6e 67 65 46 53 49 20 |n to !changeFSI | 000004b0 69 74 20 77 69 6c 6c 20 62 65 20 6f 6b 61 79 2e |it will be okay.| 000004c0 20 54 68 69 73 20 69 73 20 6e 6f 74 20 65 66 66 | This is not eff| 000004d0 65 63 74 65 64 20 62 79 20 63 68 61 6e 67 69 6e |ected by changin| 000004e0 67 20 74 68 65 0a 62 75 66 66 65 72 73 69 7a 65 |g the.buffersize| 000004f0 2e 0a 0a 57 68 65 6e 20 75 73 69 6e 67 20 53 61 |...When using Sa| 00000500 6d 70 6c 65 43 44 20 49 20 66 69 6e 64 20 49 20 |mpleCD I find I | 00000510 68 61 76 65 20 74 6f 20 75 73 65 20 74 68 65 20 |have to use the | 00000520 66 6f 6c 6c 6f 77 69 6e 67 20 73 65 71 75 65 6e |following sequen| 00000530 63 65 20 3a 0a 20 20 20 20 20 20 20 20 43 6c 69 |ce :. Cli| 00000540 63 6b 20 6f 6e 20 50 6c 61 79 0a 20 20 20 20 20 |ck on Play. | 00000550 20 20 20 53 65 74 20 53 74 61 72 74 20 28 30 20 | Set Start (0 | 00000560 30 30 3a 30 30 3a 30 30 20 64 6f 65 73 20 6e 6f |00:00:00 does no| 00000570 74 20 73 65 61 6d 20 74 6f 20 62 65 20 76 61 6c |t seam to be val| 00000580 69 64 29 0a 20 20 20 20 20 20 20 20 73 65 74 20 |id). set | 00000590 4c 65 6e 67 74 68 0a 20 20 20 20 20 20 20 20 43 |Length. C| 000005a0 6c 69 63 6b 20 6f 6e 20 73 74 6f 70 20 61 6e 64 |lick on stop and| 000005b0 20 74 68 65 6e 20 77 61 69 74 20 0a 20 20 20 20 | then wait . | 000005c0 20 20 20 20 44 72 61 67 20 69 63 6f 6e 20 74 6f | Drag icon to| 000005d0 20 64 69 73 63 0a 0a 54 68 69 73 20 66 69 78 20 | disc..This fix | 000005e0 68 61 73 20 6f 6e 6c 79 20 62 65 20 74 65 73 74 |has only be test| 000005f0 65 64 20 6f 6e 20 6d 79 20 6d 61 63 68 69 6e 65 |ed on my machine| 00000600 20 77 69 74 68 20 6d 79 20 68 61 72 64 77 61 72 | with my hardwar| 00000610 65 21 20 49 74 20 6d 69 67 68 74 20 6e 6f 74 20 |e! It might not | 00000620 77 6f 72 6b 0a 66 6f 72 20 79 6f 75 2e 0a 0a 54 |work.for you...T| 00000630 68 65 72 65 20 64 6f 65 73 20 73 65 61 6d 20 74 |here does seam t| 00000640 6f 20 62 65 20 61 20 76 65 72 69 73 6f 6e 20 31 |o be a verison 1| 00000650 2e 33 30 65 20 66 6c 6f 61 74 69 6e 67 20 61 62 |.30e floating ab| 00000660 6f 75 74 20 62 75 74 20 69 74 20 61 6c 73 6f 20 |out but it also | 00000670 68 61 73 20 74 68 65 20 73 61 6d 65 0a 65 72 72 |has the same.err| 00000680 6f 72 73 20 66 6f 72 20 6d 65 2e 0a 0a 43 44 73 |ors for me...CDs| 00000690 70 65 65 64 20 74 68 69 6e 6b 73 20 69 74 20 63 |peed thinks it c| 000006a0 61 6e 20 67 65 74 20 31 2e 33 36 37 4d 62 79 74 |an get 1.367Mbyt| 000006b0 65 73 2f 73 65 63 6f 6e 64 20 6f 66 66 20 6d 79 |es/second off my| 000006c0 20 43 44 52 4f 4d 20 21 21 0a 0a 48 6f 70 65 20 | CDROM !!..Hope | 000006d0 74 68 69 73 20 77 69 6c 6c 20 68 65 6c 70 20 73 |this will help s| 000006e0 6f 6d 65 20 70 65 6f 70 6c 65 0a 0a 44 6f 6d 69 |ome people..Domi| 000006f0 6e 69 63 0a 0a 0a 0a |nic....| 000006f7
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