Hello from Gregg C Levine Has anyone actually built one of those? Or for that matter, anything resembling it? ... Gregg C Levine hansolofalcon@......
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geoff_field2003
Jun 20, 2003 4:57 am
We're currently looking at the ACE8001 as a watchdog processor in our devices (my employer makes automotive products). The tools I've found on Fairchild's web...
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geoff_field2003
Jun 20, 2003 6:03 am
... our ... Is ... And, of course, looking at the data sheets in more detail, I see that the memory map is very nearly exactly the same as the 1001, so I can ...
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ranzelc2001
Jun 20, 2003 2:40 pm
... The version 8.01 of the development tools (available here in the Files section) is the most recent version. The 8001 is a 1001 with enhancements to make...
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geoff_field2003
Jun 24, 2003 7:18 am
... Thanks Rob, Once I'd actually opened my eyes and checked the spec, I thought that might have been the case. It's good to have someone who's in the know...
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geoff_field2003
Jun 26, 2003 4:53 am
I'm currently doing a watchdog application with the ACE8001 (an ACE1001 with tweaks). In other words, the ACE8001 is acting as a programmable watchdog chip....
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Teodor Vendov
tan1234_98
Jun 26, 2003 8:34 am
Yes , unfortunately ACE T0 interval is switched to 4096 after reseting WDT. Best regards, Teodor ... From: "geoff_field2003" <geoff_field2003@...> To:...
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geoff_field2003
Jun 26, 2003 10:53 pm
... Thanks Teodor, but I'm *still* not totally clear on the issue. Which of these scenarios matches the facts? 1) T0 rolls over. Some time later (say,...
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geoff_field2003
Jun 27, 2003 12:42 am
Replying to my own post again. Scenario 1) below is the way the simulator behaves. This actually makes my timing task quite a lot trickier, because I'd *love*...
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Jens Hildebrandt
friese99de
Jun 27, 2003 6:50 am
Geoff, are you sure, the real chip behaves according to your scenario 1? This would make absolutely no sense. Since Timer0 is the prescaler for the watchdog...
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ranzelc2001
Jun 27, 2003 2:56 pm
Geoff, I haven't been ignoring your posts this week. I have just been too busy finishing another tool where I am a week late on the deadline. I wanted to do...
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Geoff Field
geoff_field2003
Jun 29, 2003 11:02 pm
Thanks for your response Jens. I've embedded a few comments. Geoff geoff underscore field at aapl dot com dot au ... I've just tested on the emulator, and it...
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Geoff Field
geoff_field2003
Jun 29, 2003 11:15 pm
Rob, Thanks for your response. I've embedded some comments. ... I really didn't mean to imply that you had. My apologies. ... Been there - all too often ;-) ...
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Geoff Field
geoff_field2003
Jul 2, 2003 5:53 am
Me again ;-) There seems to be a discrepancy between the data sheets and the on- line help for the ACE1001/8001 devices. Specifically, the on-line help says: ...
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lloyd lloyd
lloydx2002
Jul 2, 2003 5:47 pm
You are correct that there is a discrepancy. The AceTBuilder was done before all the characterizations on the Ace1001 and assumed that the LBD behavior would...
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Geoff Field
geoff_field2003
Jul 2, 2003 11:14 pm
Thanks for your response Lloyd. ... done ... the LBD ... To my mind, that was a reasonable assumption. After all, you have to start somewhere. ... the correct...
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ranzelc2001
Jul 8, 2003 1:30 am
A new version of the Simulator executable is available in the "Files" section. It has the Timer0 pending flag problem found by Geoff Field fixed. When Lloyd's...
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Krasimir Panamski - T...
kpanamski
Jul 13, 2003 7:35 pm
Hello everybody, I have a problem and I can't solve it by myself. Thanks in advance. I have small experience with ACEx and I can't continue without your help...
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Geoff Field
geoff_field2003
Jul 14, 2003 6:22 am
I've just come across another datasheet/on-line help discrepancy. This time, I'm using the ACE1502, and I'm trying to use the HBC (Hardware Bit Encoder) to...
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ranzelc2001
Jul 14, 2003 3:40 pm
I suspect you may have been misled by side effects of instructions on the writable bits of the status register. The only bit that may be changed with the ...
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ranzelc2001
Jul 14, 2003 4:52 pm
The data sheet is correct and the online help is wrong and will be corrected. BTW nearly all the ACEx projects I have worked on involved serial communications...
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Geoff Field
geoff_field2003
Jul 14, 2003 11:29 pm
... Thanks Rob. I'll work on that basis. I suspected the datasheet would be more likely to be correct than the on-line help, since the former is usually done...
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Geoff Field
geoff_field2003
Jul 14, 2003 11:54 pm
Replying to myself again ;-) [snip] ... OK, I've tried an actual 1502 in the circuit and I'm still getting the aberrant behaviour. This tells me the emulator...
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Geoff Field
geoff_field2003
Jul 15, 2003 1:18 am
... And yet again. Anyone would think I like talking to myself ;-) I've *finally* worked out what's happening after analysing it carefully with a CRO and...
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Teodor Vendov
tan1234_98
Jul 15, 2003 3:41 pm
I just realize that I am not quite sure how to handle context saving during asynchronous interrupt. Any suggestions? Teodor ... From: "ranzelc2001"...
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Geoff Field
geoff_field2003
Jul 15, 2003 11:00 pm
... saving during ... Almost always you'll need to save the status register, and sometimes you'll need to save A. If you need to save more than that your ...
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ranzelc2001
Jul 16, 2003 1:53 pm
... saving during ... I would like to suggest just saving the carry flag in your interrupt routine. Anything else saved is what will be modified by the routine...
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kpanamski
Jul 16, 2003 4:32 pm
Thanks all for the support about my "STATUS problem" :)). Special thanks to ranzelc2001! I am glad to understand where exactly was my mistake. Woooou, ... I am...
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Geoff Field
geoff_field2003
Jul 18, 2003 1:31 am
I've discovered that the simulator allows direct writing of the Status register, so the code sample I posted earlier actually works - on the simulator only....
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ranzelc2001
Jul 18, 2003 4:00 pm
... I will restate the thinking behind why the Simulator allows modifying the status register bits when they cannot be modified in the device. The EE Ready bit...
