July 2002 - Oberon - mailman3.inf.ethz.ch

Re (2): [Oberon] http://www.oberon.ethz.ch/display.html
by peter_easthope＠gulfnet.sd64.bc.ca 15 Jul '02

15 Jul '02

Someone wrote, > You see... The http://www-scf.usc.edu/~akotaobi/gptut.html Thanks. I looked at that site before posting the question. Seems that SwitchTrident9xxx might involve the double buffering described in one of the tutorials, ... but how exactly. Regards, Peter E. Peter Easthope http://carnot.pathology.ubc.ca/

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Re. [Oberon] http://www.oberon.ethz.ch/display.html
by cglur＠onwe.co.za 13 Jul '02

13 Jul '02

Peter Easthope wrote: > In http://www.oberon.ethz.ch/display.html > I studied the description of SwitchTrident9xxx > but still do not understand. > What exactly is the purpose of this procedure? > What is accomplished in each of the three > statements? PROCEDURE SwitchTrident9xxx(bank: LONGINT); BEGIN > curBank := bank; > SYSTEM.PORTOUT(3D8H, CHR(bank)); > SYSTEM.PORTOUT(3D9H, CHR(bank)) END SwitchTrident9xxx; It is near impossible to analyse 'bottom up'. If your 'given result' is 7 and known to be the sum of 2 natural numbers, then there are several posibilities. Working in the other direction: given 3 plus 4 has a single answer. So working in the one 'direction' give you a one-to-many descision at each descision point; and in the opposite direction you usually have a single reason at each 'point'. As you know: curBank := bank; assigns the LONGINT sized value, 'bank', to the non local variable 'curBank'. More than this you can't be sure of. (was it 1+6 or 5+2 ?) SYSTEM.PORTOUT(3D8H, CHR(bank)); I guess would mean: write the 8 least significant bits { using the CHR type/size conversion} of bank to the device/register that has address 3D8H. The hardware is such that the 3D8H and 3D9H hardware devices have 8 bit inputs (which the CPU will output to), but the procedure's argument is of size LONGINT (? 64 bits I guess), for reasons which you can't know from the information available here. SYSTEM.PORTOUT's 2nd argument apparently must be type CHR. Hence the type conversion, to not have a syntax error. As said the way to analyse is to 'know the "destination" first, and then work towards it', rather than observing the ant walking and trying to guess where he plans to go !! So if you start from eg: set the BankSelectRegister to Bank; set the SpeedSelectRegister to Minimum; read the StatusRegister .... etc, then it's easier (than trying reverse engineering) to translate this to: SYSTEM.PORTOUT(BankSelectRegister, CHR(bank)); SYSTEM.PORTOUT(SpeedSelectRegister, Minimum); SYSTEM.PORTIN(StatusRegister, StatusByte); -- Chris Glur.

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http://www.oberon.ethz.ch/display.html
by peter_easthope＠gulfnet.sd64.bc.ca 13 Jul '02

13 Jul '02

Oberon Readers, In http://www.oberon.ethz.ch/display.html I studied the description of SwitchTrident9xxx but still do not understand. What exactly is the purpose of this procedure? What is accomplished in each of the three statements? curBank := bank; SYSTEM.PORTOUT(3D8H, CHR(bank)); SYSTEM.PORTOUT(3D9H, CHR(bank)) I suspect that many others can benefit from a clear exposition of this topic. Perhaps the responses can be edited and incorporated into the Web page. Thanks in advance, Peter E. Peter Easthope http://carnot.pathology.ubc.ca/

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Fine Timer, part two
by Michael A. McGaw 10 Jul '02

10 Jul '02

Pieter: I found the problem with not being able to compile module FineTimer under 2.3.6: I have been converting all of the .Mod source files to standard text files (e.g., all special Oberon chars are omitted, and it looks like CRs and/or LFs are added at the front of each source line), and then using these for compilation. This approach has worked fine for ALL of my source files, save one: when I did this conversion to FineTimer, it did not compile. But, if I use the native Oberon file, as obtained on the FTP site, it compiles fine. It appears that the section in the compiler that scans for assembler does not handle the character left at the front (looks like an open square symbol on my systems) of each line from the text file conversion from native oberon format. It does fine parsing all other sections of the source text, just not the assembler statements. Appreciated your taking a look. Mike

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Re: bug in HTML.Compile
by peter_easthope＠gulfnet.sd64.bc.ca 10 Jul '02

10 Jul '02

Chris Glur & possibly others, A few days ago I mentioned the TeXtoHTML translator. There are several. Go to this page http://www.tug.org/interest.html and click item 10, "TeX on the Web, and related software". At least one of these might provide an example for implementation in Oberon. Regards, Peter E. Peter Easthope http://carnot.pathology.ubc.ca/

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Re: Fine Timer and 2.3.6
by Michael A. McGaw 10 Jul '02

10 Jul '02

Pieter: I tried commenting the offending line. The same error occurs now at the next line: DB 0FH, 31H ;RDTSC into EDX:EAX. I will try loading a later version of Native, and compiling here. I noticed, though, when I started the 2.3.6 compiler, one sees the 'using OP2-ASM add-on / prk' message, so, it appears that the compiler is at least attempting to work with this text. I am only using the \s option. Mike

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some questions
by Zhuang Yan 10 Jul '02

10 Jul '02

Hello everyone, I am a new member in this maillist. It is my honor to communicate with you through Emails. Our lab just bought the SmartRob2 mobile robot platform which used XO/2 RTOS as its Operating System. We have sveral questions about this system. I list these questions in the following part of this mail. 1. Can we use two computers connect to one robot? For example, we set one PC with 10.10.10.1, the second is 10.10.10.2. The first PC can connect to the robot and communicate with it successfully. But when the second one telnet to the robot, it can enter the XO/2 shell enviroment, but it need input the user and password. The most strange condition is that we cannot input any characters in the password place. 2. If we change the host ip(for example,the original one is 10.10.10.1, and we set it to 10.10.10.2) and also configure the according internet setting of the SmartROB 2 controller via COM1 port, why the XO/2 shell ask me input the user and password (we cannot input any characters in the password place too). But when we change and reset the host ip to 10.10.10.1, we can enter to the XO/2 autonomously with the prompt none@icPPC> . 3. How to use the XOClient.panel in Oberon? We can connect the robot's controller using XOClient.panel but cannot execute commands as using telent. 4. Still we feel puzzled that why we cannot "AppLinker.Batch" the config text file created by ourselves. Even we just change the original SmartRob1.Config file and save it, we cannot "AppLinker.Batch" the new file again. Looking forward to your answers. Thank you very much. Best regards, Aaron Zhuang -------------------------------------------------------------- The great regrets in our lives are the risks we didn't take. If you think something will make you happy , go for it . Remember that you pass this way only once . --------------------------------------------------------------

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Re: [Oberon] Fine Timer question
by muller＠inf.ethz.ch 09 Jul '02

09 Jul '02

"Michael A. McGaw" <mamcgaw(a)ameritech.net> wrote: > I am trying to use the Native.FineTimer.Mod in the Contributions section > under Native 2.3.6, and get the following errors upon attempting to compile: > > err 4 identifier does not match procedure name. Here, the error points to > the following statement: > > MOV EBX, t[EBP] > > This is the first line of the first procedure in the module. > > It would appear that the compiler is balking at the assembler statements. I > am guessing that module FineTimer is making use of functionality in the > compiler that appears post 2.3.6. I can't see anything wrong with this, and I think the assembler used the same syntax in 2.3.6. If you comment out this line (add ";" before it), does an error occur on the next line? -- Pieter -- Pieter Muller, Computer Systems Institute, ETH Zurich / MCT Lab, Zurich Native Oberon OS: http://www.oberon.ethz.ch/native/

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Re (4): [Oberon] Native Oberon: Mounting an ISO9660 CDROM
by muller＠inf.ethz.ch 09 Jul '02

09 Jul '02

cglur(a)onwe.co.za wrote: > Perhaps this IDE's master boot record can fix my: > Disk: IDE0, 37GB, ST340016A > IDE0#00 38166MB --- (Whole disk) > > I'm guessing the MBR depends on the geometry ? > My CHS is 16'383, 16, 63. > It's not on this machine now, to use Partitions.Show detail ~ The MBR block contains two parts. The first 446 bytes contain the master boot loader (normally placed there by the drive manufacturer's format program), which loads the boot block of the first active partition. The last 66 bytes contain the primary partition table, consisting of 4 primary partitions. Since 12.02.01, the Partitions module has a WriteMBR command, which can write a 512-byte file to the MBR without overwriting the partition table. It only overwrites the first 446 bytes. A short example of the use of this command is at: http://www.oberon.ethz.ch/partitions.html If you want to restore the MBR of a disk without damaging the partition table, you can use: Partitions.PartitionToFile dev#part filename 0 1 ~ to copy the MBR of an error-free disk and write it with: Partitions.WriteMBR dev#0 filename ~ on the broken disk. You can find more on the MBR and partition table format at: http://www.ata-atapi.com/hiwmbr.htm http://www.ata-atapi.com/hiwtab.htm Hope this helps. -- Pieter -- Pieter Muller, Computer Systems Institute, ETH Zurich / MCT Lab, Zurich Native Oberon OS: http://www.oberon.ethz.ch/native/

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Re: (Fwd) quickport driver
by muller＠inf.ethz.ch 09 Jul '02

09 Jul '02

On 21 Jun 2002, "Josef Dalcolmo" <dalcolmo(a)vh-s.de> wrote: > I have a QuickPort mouse controller on my laptop, but at least > Oberon0 does not recognize it (it has only one option for a PS/2 > mouse). How do I activate this driver? When the default mouse type is selected (PS/2), the QuickPort mouse should be detected automatically. If it does not function, you could try executing "System.State Input" and see if "qp = TRUE", which indicates that the quickport was detected. Q. How to execute commands without a mouse? A. Active ScrollLock and use the numeric keypad keys to simulate mouse movement. ML=0, MM=5, MR=. This was included for debugging purposes, and is not really usable as a complete mouse substitute. -- Pieter -- Pieter Muller, Computer Systems Institute, ETH Zurich / MCT Lab, Zurich Native Oberon OS: http://www.oberon.ethz.ch/native/

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