[68300] Re: 68332-SDRAM interface
2003-04-08 by Andrei Chichak
... Outside of the embedded systems world, I don t think that people would consider the 332 able to address large chunks of memory . By using SRAM and the
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[68300] Re: 68332-SDRAM interface
2003-04-08 by Steve Russell
Shyam, The 68360 is listed as a production part and has a DRAM interface. It also has a full 32-bit address, if you find that a mere 24 bits cramps your
Re: 68332-SDRAM interface
2003-04-08 by shyam_mali
Hi Jeff, Can you comment on this design, I happened to see this site after i read your message. http://www.users.qwest.net/~kmaxon/page/cont/cont47.htm . The
Re: [68300] Re: 68332-SDRAM interface
2003-04-08 by jeffrey.tenney@gm.com
Shyam, I don t think you ll get many responses on using SDRAM with a 68xxx. These processors have asynchronous external buses. The conversion hardware and
Re: 68332-SDRAM interface
2003-04-08 by shyam_mali
Charles, Yes, I am looking for advise on the feasibility and information of interfacing the DIMM modules used in the PC. Kindly advise. Shyam ... used in PC s
RE: [68300] 68332-SDRAM interface
2003-04-08 by Melear Charles-rdph40
Shyam, Do you mean that you want to put Synchronous DRAM, like the kind used in PC s and stuff? The MC68332 was not particularly designed to deal with DRAM.
68332-SDRAM interface
2003-04-08 by shyam_mali
Hi Charles, Robert Thanks for the assurance, i am keen on starting this project. To start with the 332, i feel that it might be very helpful to have an
RE: [68300] 68332 SDRAM interface
2003-04-07 by Melear Charles-rdph40
Shyam, The MC68332 is a good part to use. What you might want to do is get with a distributor and get a particular part number and then get the distributor to
Re: [68300] Re: 68332 SDRAM interface
2003-04-07 by Robert Layton
Below is the answer which I got from Motorola when I asked them the same question recently ( the E20 refers to one of the 68332 chips ) : Dear Robert Layton,
Re: 68332 SDRAM interface
2003-04-07 by jeffreyslcu
If you are starting out with a new project, you might want to think twice about using the 68332. I am using part MC68332GCFC16 and it allegedly has an
68332 SDRAM interface
2003-04-07 by shyam_mali
Hi, I am a newcomer in this group and also a beginner in the 68000 series microcontrollers. I am looking forward to using the 68332. I am looking for some
Re: [68300] Can I user the Interrupt of MC68376
2003-04-07 by jeffrey.tenney@gm.com
Are you using an OS? Can you service any interrupts at all, including internal interrupts? Jeff wflsa on 04/06/2003 09:18:16 PM Please
RE: [68300] Can I user the Interrupt of MC68376
2003-04-07 by Melear Charles-rdph40
Hello, Please give some more details on your problem. I am simply guessing on this but if your program is simply halting (or appears to halt) when an
Can I user the Interrupt of MC68376
2003-04-07 by wflsa
I hope use Interrupt server program in IRQ pin of the MC68376. when a low level is generated, MCU is call my specify server program. Now, I generate a low
RE: [68300] TPU Problem
2003-04-02 by Melear Charles-rdph40
Robert, I do not read C code very well but there is one thing that I have learned to look for. In one of the last lines in your code, you do something to the
TPU Problem
2003-03-31 by Robert Yablonski
Hello Group, We have a TPU problem. When using the PTA function, in Mode 3 we sometimes get a reading that is 1/2 the actual period Plus 1035+-1. The
Errata
2003-03-26 by Andrei Chichak
Hi All, This was going to be a message regarding SWT timing, but I figured it out. But I found a documentation error in the mean time. MC68332UM/AD Page D-12
Re: [68300] Does anybody have a TPU solution for this?
2003-03-20 by Jose Lopez
Alwin, I ve never had to do this before, but I believe you can probably do this using the OC and PPWA functions. Take a look at this application note:
RE: [68300] Does anybody have a TPU solution for this?
2003-03-20 by Alwin Lutz
Thanks Andrei, One of the solutions I am thinking about would be similar to the one you suggested. In effect, I would use the ITC to generate an interrupt and
Re: [68300] Does anybody have a TPU solution for this?
2003-03-20 by Andrei Chichak
What you have is similar to what is needed for the ITC and PSP functions. This is similar to what happens in an automotive fuel injection system. The problem
Re: [68300] Does anybody have a TPU solution for this?
2003-03-20 by Robert Smith
The straight forward way is to program one channel for the input pulse and one for the output pulse. The communicate between the two in the interrupt handlers.
Does anybody have a TPU solution for this?
2003-03-20 by Alwin Lutz
Hello group, does anybody of you guys know of some nifty way to solve the following problem: I have an incoming signal (low pulse with a period T1) at one TPU
Re: [68300] pwm interrupt for 68376
2003-03-19 by jeffrey.tenney@gm.com
Erik, Yes, it s user defined (within limits). Write to the Bus Interface Unit s MCR to set the base interrupt vector for the CTM4. PWM5 would use vector
pwm interrupt for 68376
2003-03-19 by Erik Wise
I am having trouble setting up the interrupt that will fire after completion of each pwm period. I previously posted but made a mistake when I said that I was
RE: [68300] Re: Theoretical questions
2003-03-07 by Iain A B Lindsay
Perhaps there is confusion between word/longword adressing (which has very little to do with the address bus, apart from alignment restrictions) and the
Re: [68300] TPU emulation on 68LK332
2003-03-07 by Allen Nance
Hello Again: I found the problem. Yes, the TPU emulation does work on the 68LK332. I had a bug in my old code that for some strange reason didn t show up on
TPU emulation on 68LK332
2003-03-07 by Allen Nance
Hello group: Has anyone used the TPU emulation RAM as TPU code space on the 68LK332 (3V part)? Should it work? I have an application which runs on a 5V part
RE: [68300] Re: Theoretical questions
2003-03-05 by jeffrey.tenney@gm.com
John, You can review the addressing modes (direct, indirect, absolute, etc.) of the CPU32 in the CPU32RM, chapter 3. However, the CPU32 does not do memory
Re: [68300] 68336 PWM Interrupt question
2003-03-05 by Robert Layton
Erik, If you are using C, I have some header and initialization files which may be useful in describing and using the TPU. Please let me know. Regards, Robert
RE: [68300] Re: Theoretical questions
2003-03-05 by Melear Charles-rdph40
John, Bye the bye, LEA only has a 32-bit form, i.e., it always uses Long Word addressing. Also, move.l also forces Long word addressing because a 32-bit
RE: [68300] Re: Theoretical questions
2003-03-05 by Melear Charles-rdph40
John, Purely from a software / compiler standpoint, a C compiler treats the CPU32 as a 32-bit address machine. So, you will see instructions that use the full
Re: [68300] 68336 PWM Interrupt question
2003-03-05 by John Mermigis
First of all the TPU issues one interrupt of its own and internally administers of which channel sould that be If I remember well (I don t have the manual at
RE: [68300] Re: Theoretical questions
2003-03-05 by John Mermigis
First of all thank you all Guys for your interest in my question Actually, I did mention that this was a purely theoretical question, I have already solved the
68336 PWM Interrupt question
2003-03-04 by Erik Wise
Presently I am using a TPU Channel to generate a PWM signal, and it works as I would like. However, if possible I would like an interrupt to be generated on
RE: [68300] Re: Theoretical questions
2003-03-04 by Melear Charles-rdph40
Jeff, I am just a hardware guy. I know in the past that this .w vs .l addressing has cropped up and that it was solved by specifically adding the .l ,
RE: [68300] Re: Theoretical questions
2003-03-04 by jeffrey.tenney@gm.com
Charlie, I am shocked that any assembler would default to word addressing for the instruction example you give, MOVE.B #$12, (A0) especially if you re saying
RE: [68300] Re: Theoretical questions
2003-03-04 by Melear Charles-rdph40
Dimiter, You are right about self-respecting compilers. However, there are several legal modes of operation that can be specified here. Consider this
Re: Theoretical questions
2003-03-04 by Dimiter Popoff
Any self-respecting compiler or assembler should issue an error message if one tries to fit into a word an address bigger than that (notice that the 68K family
RE: [68300] Theoretical questions
2003-03-04 by Melear Charles-rdph40
Hello everyone, When I receive questions like this, I try to offer simple answers that seem to trick a lot of people. Many compilers default to word length
Theoretical questions
2003-03-04 by johnmerm <iomer@egnatia.ee.auth.gr>
Could somebody explain to me why a Bus error exception shall occur when commands like MOVE.L (_BlaBla),A1 or ADD.L A2,(_Blabla) Well it seems the problem is
[68300] 68376 -> QSPI trouble
2003-02-19 by Jose Lopez
List, I m using the QSPI to talk to a D/A and it s not working the way I would expect it to. The QSPI is configured for wrap-around mode and the interrupts are
Re: [68300] 64/32 division - repost with another From:
2003-02-11 by Scott Newell
... Nevermind...that s obviously not gonna work, cause you re back to the 64/32 bit divide again. Sorry, guess I shouldn t try to do mental math first thing
Re: [68300] 64/32 division - repost with another From:
2003-02-11 by Scott Newell
... Can you... divide the high 32 by divisor, shift the quotient and remainder 32 bits left, add the low 32 to the shifted remainder, divide again, and sum the
RE: [68300] Internal Privilege Violation Error
2003-02-11 by Melear Charles-rdph40
Hello everyone, A priviledge violation is created when an attempt is made to execute a Privileged Instruction when the CPU is in the USER (as opposed to
64/32 division - repost with another From:
2003-02-11 by Dimiter Popoff
Hi all, I have written an assembler (or is it a compiler?) which produces power PC code from CPU32 sources (and more than that, but this is another topic). To
64/32 division
2003-02-11 by Dimiter Popoff
Hi all, I have written an assembler (or is it a compiler?) which produces power PC code from CPU32 sources (and more than that, but this is another topic). To
Internal Privilege Violation Error
2003-02-11 by johnmerm <iomer@egnatia.ee.auth.gr>
As the subject indicates, I get one Internal.... What could probably cause this to happen And in genereal what is the diference between Internal whatever
OT: Introl C user group
2003-02-06 by Mark Wyman
Hi all, I started a user group for the few of us who are using Introl C tools for Motorola processors rather than the other available perfectly good tools. You
Re: [68300] Re: loaders
2003-02-02 by Jose Lopez
I had mine set to ICD1 , 200 and it still did it. ... _________________________________________________________________ Add photos to your e-mail with MSN
Re: loaders
2003-02-02 by thisobj <fvolker@yhti.net>
With BD32, there were continuous errors on opening the program until I changed the 2 lines in the BD32.CFG file to ICD1 , 1 . This file previously contained