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Hello everyone, I figured out how to do it. Using JBug11, you have to SET the MODA bit in the HPRIO register to put it in 'special expanded boot-strap mode', as per the pink reference manual. With that bit set, I could access the NVRAM and load Buffalo. It took quite a bit of sleuthing to discover that bit of info. But, like 'they' always say "When in doubt, read the manual." Thanks for your help and have a great day.\, Duane |
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not sure, it is Monday here, 11:22, in Australia.. I guess I am closer to Thailand, though. Darren > -----Original Message----- > From: Redd, Emmett R [mailto:] > Sent: Monday, 7 March 2005 11:21 > Darren, > > It still did not work from my end; maybe I am too far away > :-). Or, it > is Sunday here and Monday there. > > Emmett Redd Ph.D. mailto: > Associate Professor (417)836-5221 > Department of Physics, Astronomy, and Materials Science > Southwest Missouri State University Fax (417)836-6226 > 901 SOUTH NATIONAL Dept (417)836-5131 > SPRINGFIELD, MO 65804 USA |
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Darren, It still did not work from my end; maybe I am too far away :-). Or, it is Sunday here and Monday there. Emmett Redd Ph.D. mailto: Associate Professor (417)836-5221 Department of Physics, Astronomy, and Materials Science Southwest Missouri State University Fax (417)836-6226 901 SOUTH NATIONAL Dept (417)836-5131 SPRINGFIELD, MO 65804 USA > -----Original Message----- > From: Darren [mailto:] > Sent: Sunday, March 06, 2005 4:46 PM > To: > Subject: RE: [m68HC11] Re: Loading Buffalo into NVRAM > > Hi Emmett, > > I just clicked on the link below. > > http://chaokhun.kmitl.ac.th/~kswichit/C11evb/C11evb.htm > > And it open fine, if that's the link your referring to. > > Darren > > -----Original Message----- > > From: Redd, Emmett R [mailto:] > > > > > > > > Duane, > > > > I could not pull up the web site you gave. > > > > > > > -----Original Message----- > > > From: mtn_biker37 [mailto:] > > > > > > > > > > > > > > You have not given us the detail of what NVRAM you are > > using. But, > > > > following Fig. 2-23, RAM usually has CS* which would need to be > > > > connected to A15*, not A15 AND E. And, OE* would need to > > > be R/W* NAND > > > > E. > > > > > > > Sorry, it's wired just like this. > > > http://chaokhun.kmitl.ac.th/~kswichit/C11evb/C11evb.htm > > > > > > The RAM is a Dallas Semi DS1230 32K x 8. > > > > > > Thanks for your help! > > > > > > Duane |
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Hi Emmett, I just clicked on the link below. http://chaokhun.kmitl.ac.th/~kswichit/C11evb/C11evb.htm And it open fine, if that's the link your referring to. Darren > -----Original Message----- > From: Redd, Emmett R [mailto:] > > Duane, > > I could not pull up the web site you gave. > > -----Original Message----- > > From: mtn_biker37 [mailto:] > > > > > > > > > > You have not given us the detail of what NVRAM you are > using. But, > > > following Fig. 2-23, RAM usually has CS* which would need to be > > > connected to A15*, not A15 AND E. And, OE* would need to > > be R/W* NAND > > > E. > > > > > Sorry, it's wired just like this. > > http://chaokhun.kmitl.ac.th/~kswichit/C11evb/C11evb.htm > > > > The RAM is a Dallas Semi DS1230 32K x 8. > > > > Thanks for your help! > > > > Duane |
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Duane, I could not pull up the web site you gave. Emmett Redd Ph.D. mailto: Associate Professor (417)836-5221 Department of Physics, Astronomy, and Materials Science Southwest Missouri State University Fax (417)836-6226 901 SOUTH NATIONAL Dept (417)836-5131 SPRINGFIELD, MO 65804 USA > -----Original Message----- > From: mtn_biker37 [mailto:] > Sent: Tuesday, March 01, 2005 12:40 PM > To: > Subject: [m68HC11] Re: Loading Buffalo into NVRAM > > > > > > You have not given us the detail of what NVRAM you are using. But, > > following Fig. 2-23, RAM usually has CS* which would need to be > > connected to A15*, not A15 AND E. And, OE* would need to > be R/W* NAND > > E. > > > Sorry, it's wired just like this. > http://chaokhun.kmitl.ac.th/~kswichit/C11evb/C11evb.htm > > The RAM is a Dallas Semi DS1230 32K x 8. > > Thanks for your help! > > Duane |
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> > You have not given us the detail of what NVRAM you are using. But, > following Fig. 2-23, RAM usually has CS* which would need to be > connected to A15*, not A15 AND E. And, OE* would need to be R/W* NAND > E. > Sorry, it's wired just like this. http://chaokhun.kmitl.ac.th/~kswichit/C11evb/C11evb.htm The RAM is a Dallas Semi DS1230 32K x 8. Thanks for your help! Duane |
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> > > > Are you sure the NVRAM chip select and other hardware lines are > > connected correctly, ala Fig. 2-23 of the Pink Book? > Chip Select is done via the A15 AND E lines. R/W input on chip is > connected to R/W line on HC11. Also using a 74HC573 instead of HC373. > You have not given us the detail of what NVRAM you are using. But, following Fig. 2-23, RAM usually has CS* which would need to be connected to A15*, not A15 AND E. And, OE* would need to be R/W* NAND E. Emmett Redd Ph.D. mailto: Associate Professor (417)836-5221 Department of Physics, Astronomy, and Materials Science Southwest Missouri State University Fax (417)836-6226 901 SOUTH NATIONAL Dept (417)836-5131 SPRINGFIELD, MO 65804 USA |
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> What program are you using to access bootstrap mode? JBug11 Have you told it where the (NV)RAM is? That would be the part I forgot to check/didn't know about. I will add in info - expansion ram = $8000 - $FFFF > > Are you sure the NVRAM chip select and other hardware lines are > connected correctly, ala Fig. 2-23 of the Pink Book? Chip Select is done via the A15 AND E lines. R/W input on chip is connected to R/W line on HC11. Also using a 74HC573 instead of HC373. > > Please give us more details. > > Emmett Redd Ph.D. mailto:EmmettRedd@s... > Associate Professor (417)836-5221 > Department of Physics, Astronomy, and Materials Science > Southwest Missouri State University Fax (417)836-6226 > 901 SOUTH NATIONAL Dept (417)836-5131 > SPRINGFIELD, MO 65804 USA > |
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Some notes and questions for you: The special bootstrap mode should be able to access all memory. Have you been able to access (read) it? If nothing else, set ROMON and see if BUFFALO is there. What program are you using to access bootstrap mode? Have you told it where the (NV)RAM is? Are you sure the NVRAM chip select and other hardware lines are connected correctly, ala Fig. 2-23 of the Pink Book? Please give us more details. Emmett Redd Ph.D. mailto: Associate Professor (417)836-5221 Department of Physics, Astronomy, and Materials Science Southwest Missouri State University Fax (417)836-6226 901 SOUTH NATIONAL Dept (417)836-5131 SPRINGFIELD, MO 65804 USA > -----Original Message----- > From: mtn_biker37 [mailto:] > Sent: Tuesday, March 01, 2005 9:34 AM > To: > Subject: [m68HC11] Loading Buffalo into NVRAM > > Hello everyone, > > I have one of the old (but still useful) EVBU boards with a HC711E9 on > it. I've interfaced a DS1230 (32K x 8) NVRAM for use in expanded > mode. My question is how do I load the Buf34.s19 the NVRAM? I've > already cleared the ROMON bit in the config register. In Bootstrap > mode, you can't see the expanded NVRAM (or at least I don't know how > to access it). The 32K starting address is $8000, which seems like > the common thing to do(Handy Board, and a couple of other boards I've > looked at). > > Thanks for the help! > > Duane > |
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Hello everyone, I have one of the old (but still useful) EVBU boards with a HC711E9 on it. I've interfaced a DS1230 (32K x 8) NVRAM for use in expanded mode. My question is how do I load the Buf34.s19 the NVRAM? I've already cleared the ROMON bit in the config register. In Bootstrap mode, you can't see the expanded NVRAM (or at least I don't know how to access it). The 32K starting address is $8000, which seems like the common thing to do(Handy Board, and a couple of other boards I've looked at). Thanks for the help! Duane |