_The Doctor__ Posted January 19, 2018 Share Posted January 19, 2018 MD5 is no longer a component of windows you need to add it back in, you could just post the roms and someone can do it for you, but it is easy enough to do a search and re install the funtionality Quote Link to comment Share on other sites More sharing options...
DavidMil Posted January 19, 2018 Author Share Posted January 19, 2018 (edited) See if this ATR file will work. It is the whole disk with mydos3.011 and the three bin files. Sorry, I'm not very good with APE. One more thing; I used a starting address of zero on all three chips. Let me know if I should have used something else. DavidMil MyDOS 3.011.atr Edited January 19, 2018 by DavidMil Quote Link to comment Share on other sites More sharing options...
+DrVenkman Posted January 19, 2018 Share Posted January 19, 2018 MD5 is a hash-value function designed to verify integrity/authenticity of files first used as a sort of digital signature in cryptography. Basically, a proper hash function should be a repeatable, accurate representation of a larger file. If you change a single bit, the value of the hash function will change. MD5 has long been supplanted for crypto hash functions, as it has been found to be vulnerable to various forgery and mathematical attack techniques to fake hash values, or very subtly change the underlying file in a way that gives the same hash value. So it’s useless these days for crypto, e-commerce, etc. But for verifying old Atari file contents, it’s fine. 5 Quote Link to comment Share on other sites More sharing options...
+x=usr(1536) Posted January 20, 2018 Share Posted January 20, 2018 MD5 is a hash-value function designed to verify integrity/authenticity of files first used as a sort of digital signature in cryptography. Basically, a proper hash function should be a repeatable, accurate representation of a larger file. If you change a single bit, the value of the hash function will change. MD5 has long been supplanted for crypto hash functions, as it has been found to be vulnerable to various forgery and mathematical attack techniques to fake hash values, or very subtly change the underlying file in a way that gives the same hash value. So it’s useless these days for crypto, e-commerce, etc. But for verifying old Atari file contents, it’s fine. SHA-256 or death Quote Link to comment Share on other sites More sharing options...
DavidMil Posted January 21, 2018 Author Share Posted January 21, 2018 DrVenkman, where you going to look at the download of the 1200XL chip? I'm curious to hear what you think about it. DavidMil PS. I will send Gozer to see you if you need some incentive... DM Quote Link to comment Share on other sites More sharing options...
+DrVenkman Posted January 21, 2018 Share Posted January 21, 2018 DrVenkman, where you going to look at the download of the 1200XL chip? I'm curious to hear what you think about it. DavidMil PS. I will send Gozer to see you if you need some incentive... DM 'Twasn't me. It was kheller2, I belive: http://atariage.com/forums/topic/274373-i-found-some-interesting-eproms/?p=3938659 But hey, whatever happens, I'm ready. 1 Quote Link to comment Share on other sites More sharing options...
DavidMil Posted January 22, 2018 Author Share Posted January 22, 2018 'Twasn't me. It was kheller2, I belive: http://atariage.com/forums/topic/274373-i-found-some-interesting-eproms/?p=3938659 But hey, whatever happens, I'm ready. My apologies. David 1 Quote Link to comment Share on other sites More sharing options...
DavidMil Posted January 22, 2018 Author Share Posted January 22, 2018 (edited) Run and MD5 checksum against it and post the results .. I can easily compare it to the known LO ROMs out there for the 1200XL. Did you get a chance to look at the 1200XL EPROM, or do I need to do something else first? David Edited January 22, 2018 by DavidMil Quote Link to comment Share on other sites More sharing options...
+DrVenkman Posted January 22, 2018 Share Posted January 22, 2018 My apologies. David Absolutely none needed, but thank you anyway. Quote Link to comment Share on other sites More sharing options...
+kheller2 Posted January 22, 2018 Share Posted January 22, 2018 I haven't had a chance to take a look at the the ATR file. Eagle's weekend and all Quote Link to comment Share on other sites More sharing options...
DavidMil Posted January 22, 2018 Author Share Posted January 22, 2018 Eagle's weekend and all God, I hope they win! I am sooo sick of the Patriots! David 2 Quote Link to comment Share on other sites More sharing options...
+kheller2 Posted January 22, 2018 Share Posted January 22, 2018 Ok.. I must be very tired today.. but that ATR has MyDos and AtariDos DUP on it... And the ATR util for Unix is complaining their are errors.. Checking DOS 2.0s single density disk... Checking dos.sys (file_no 0) Found 28 sectors Checking dup.sys (file_no 1) Found 42 sectors Checking apshiaa.bin (file_no 2) Found 64 sectors Checking apshiab.bin (file_no 3) Found 64 sectors Checking l1200xl.bin (file_no 4) Found 64 sectors 275 sectors in use, 445 sectors free Checking VTOC header... Checking that VTOC current free sector count matches bitmap... ** It doesn't match: bitmap has 445 free, but VTOC count is 446 Checking that VTOC initial free sector count is 707... ** It's wrong, we found: 708 Checking that VTOC type code is 2... It's OK Compare VTOC bitmap with reconstructed bitmap from files... It's OK. All done. Errors were detected Just looking at the raw data I see: MYDOS 3.011 - copyright 1984 DISK OPERATING SYSTEM II VERSION COPYRIGHT 1984 ATARI CORP Extracting the binaries are just portions of DOS. Could be the ATR utils are bad... but I haven't fired this up in anything yet. 1 Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted January 22, 2018 Share Posted January 22, 2018 See if this ATR file will work. It is the whole disk with mydos3.011 and the three bin files. Sorry, I'm not very good with APE. One more thing; I used a starting address of zero on all three chips. Let me know if I should have used something else. DavidMil I'd rename this aps1200roms.atr or something..... and I'm not having any luck with this.... it's weird.. Quote Link to comment Share on other sites More sharing options...
1050 Posted January 22, 2018 Share Posted January 22, 2018 I'm with kheller2 here, my stomping around inside this ATR offering was nothing but wrong data found anywhere I care to look. Don't do APE so I don't know much about it but I do know enough about Atari file structures to know that there is not supposed to be a CAR like ascii header in it when it's sporting a standard FF FF file header which is for executables only. What made these and how isn't important, I can't trust the data I see. Snippets of DOS code in ROM should NOT be there. As in "Load MEM. SAV from what file?" plainly readable. You can always try again, but I fear without doing something a good deal different next time that other misfires are certain to happen again. I can usually make some sense of what might have gone wrong, but not this time - nothing makes too much sense. Quote Link to comment Share on other sites More sharing options...
DavidMil Posted January 23, 2018 Author Share Posted January 23, 2018 I'll try it a different way (with a different burner). David Quote Link to comment Share on other sites More sharing options...
+x=usr(1536) Posted January 28, 2018 Share Posted January 28, 2018 I'll try it a different way (with a different burner). David Just curious: any updates on this? Quote Link to comment Share on other sites More sharing options...
DavidMil Posted January 28, 2018 Author Share Posted January 28, 2018 Just curious: any updates on this? No, I'm sorry. I have all these projects going and every time one gives me a problem I put it aside, and I'm off to a different project. I've got a new project now... I've been up and down the attic stairs so many times I broke them and can't get back up there. I'm sure this will make some people happy. Plus, it being the first of the year, we have so many doctors visits (hint to the young... don't get old; it sucks!). I'll get back to it this coming week and I'll post an update. David 1 Quote Link to comment Share on other sites More sharing options...
DavidMil Posted January 29, 2018 Author Share Posted January 29, 2018 Well I put them on the MCT burner and I've saved the data from all three chips, now I have another problem. The MCT is so old that it won't run in a windows environment (remember that this old computer is the equivalent of a IBM PC clone) and only has an 8 bit buss. It does have a 720K 3.5 floppy drive, I just don't have any 720K 3.5 diskettes. The BIO's in the PC will only see is a 1.2M 51/4 drive or the 720K 3.5 drive. I tried formatting several 1.44M disks as 720's but it can't do it. Anyway, I've ordered 10 disks from EBAY and they should be here in a few days. David Quote Link to comment Share on other sites More sharing options...
DavidMil Posted February 3, 2018 Author Share Posted February 3, 2018 Alright, here is the dump of all three chips as separate files. This should work better... David 1200XL.BIN GATEWAYA.BIN GATEWAYB.BIN 2 Quote Link to comment Share on other sites More sharing options...
1050 Posted February 3, 2018 Share Posted February 3, 2018 Vast improvement just looking thru it, I did not do a compare with what we probably already have from other sources anyway. 1200XL.BIN should probably be renamed to be 1200XL_A.BIN since it's only the first half of the entire OS though. 0xE000 - 0xFFFF would be the last half. A simple DOS 2.0 save should work there and then the stripping of six byte Atari file header would get to that .bin file. Overall, it looks right as rain and I'm trusting it. 2 Quote Link to comment Share on other sites More sharing options...
DavidMil Posted February 3, 2018 Author Share Posted February 3, 2018 1200XL.BIN should probably be renamed to be 1200XL_A.BIN since it's only the first half of the entire OS though. 0xE000 - 0xFFFF would be the last half. Good point. The chip actually says Lo on it. David Quote Link to comment Share on other sites More sharing options...
+kheller2 Posted February 3, 2018 Share Posted February 3, 2018 This is a stock V10 1200XL LO ROM. Still, the sticker on it, to my knowledge, is one that has not been seen before. MD5 checksum e19eb62ef554df174766c71c029021dd Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted February 4, 2018 Share Posted February 4, 2018 I'm sure the hi chip will turn up Quote Link to comment Share on other sites More sharing options...
DavidMil Posted February 4, 2018 Author Share Posted February 4, 2018 This is a stock V10 1200XL LO ROM. Still, the sticker on it, to my knowledge, is one that has not been seen before. MD5 checksum e19eb62ef554df174766c71c029021dd You mean Rev A? David Quote Link to comment Share on other sites More sharing options...
toddtmw Posted February 4, 2018 Share Posted February 4, 2018 I'm sure the hi chip will turn upJust need to send David back up into the attic a bit. ? Quote Link to comment Share on other sites More sharing options...
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