1050 Posted January 25, 2018 Share Posted January 25, 2018 Really is easy for me so why not? don-130xeopths_fast math.bin Corrected first checksum so it will pass with green bars in the self test which is how I found it too, so maybe that part of the OS is alive and well? 2 Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted January 25, 2018 Share Posted January 25, 2018 yeah yeah yeah fire fire fire yeah he he heh 1 Quote Link to comment Share on other sites More sharing options...
Mr Robot Posted January 25, 2018 Share Posted January 25, 2018 Could I use this if I installed it in a slot on the U1MB? Quote Link to comment Share on other sites More sharing options...
1050 Posted January 25, 2018 Share Posted January 25, 2018 (edited) If that's where you would do any other 16K XL OS then I don't see why not, I don't have one so I just don't know that part about it. But it's a legit XL/XE OS all day long. For emulator use it's not the best at least for Win800 because there they like to use the patched areas used here for their patches so sometimes goofy things can start to happen. Does it need to be in a different form for U1MB? Edited January 25, 2018 by 1050 Quote Link to comment Share on other sites More sharing options...
flashjazzcat Posted January 25, 2018 Share Posted January 25, 2018 It works in an U1MB OS ROM slot. 2 Quote Link to comment Share on other sites More sharing options...
Mr Robot Posted January 25, 2018 Share Posted January 25, 2018 I tred it in an emulator, it works ok. It's an XL not an XE rom so no extra ram test boxes. I shall put this on my 1088XEL's U1Mb Thanks! 2 Quote Link to comment Share on other sites More sharing options...
tjlazer Posted March 31, 2018 Share Posted March 31, 2018 Really is easy for me so why not? don-130xeopths_fast math.bin Corrected first checksum so it will pass with green bars in the self test which is how I found it too, so maybe that part of the OS is alive and well? What does this version do? Quote Link to comment Share on other sites More sharing options...
+Nezgar Posted March 31, 2018 Share Posted March 31, 2018 What does this version do? Reviewing the past posts, here's the changes: - XL base OS ROM (Self test does not test XE extended memory) - Hias' hispeed patch - Reverse Option for BASIC - Fast Math pack patch - Updated checksums so OS startup-check passes This is pretty perfect - only minor update would be to make these changes using the latest XE OS ROM instead for the updated self-test to include extended XE memory test. I'll see if I can find /confirm a Rev D ROM that does this, maybe someone would be willing to patch that one with the above as well. 2 Quote Link to comment Share on other sites More sharing options...
tjlazer Posted April 4, 2018 Share Posted April 4, 2018 The Rev D XE ROM tests extended memory? Is there a limit to how much it can test? Quote Link to comment Share on other sites More sharing options...
+Nezgar Posted April 4, 2018 Share Posted April 4, 2018 I assume just the 4 banks for the extra 64K in the 130XE since it's the only original machine that ever came with more than 64K. 1 Quote Link to comment Share on other sites More sharing options...
1050 Posted April 6, 2018 Share Posted April 6, 2018 Yes, and it's broken. A bug in the code makes it test two banks of the four original XE banks twice instead of a genuine four bank test. Can only test those four banks if it were fixed without writing new code. Other problems exist where if you wanted to use the code in an emulator you will find that the emulator is also overlaying it's patch code into the areas that this 'new' code was stuffed into and you'll wind up with issues to say the least. So I could post a fixed version, but I can't find the message containing the fix, just spent hours looking and I fear it was posted so long ago that the search engine will not dig it up. Is it worth it for broken code? I really don't think so. I used to until I knew about the broken part. 1 Quote Link to comment Share on other sites More sharing options...
+Nezgar Posted April 6, 2018 Share Posted April 6, 2018 (edited) Oh yuck! Yeah definitely not worth it. Again, it would have been interesting really only for acedemic reasons. I didn't even know about the additional RAM test until recently anyhow. There's so many better ways to test memory anyways. And from reading another recent thread about the XEGS ROM, since the keyboard table moved, some games like missile command will fail to read the keyboard if they don't go through proper vectors... Overall very quickly declining interest in this idea. Thanks for trying to find the fixed version though. The best fixed version would be without the intentionally slowed down code in the memory test routines in the first place. Edited April 6, 2018 by Nezgar Quote Link to comment Share on other sites More sharing options...
Kr0tki Posted April 6, 2018 Share Posted April 6, 2018 (edited) So I could post a fixed version, but I can't find themessage containing the fix, just spent hours lookingand I fear it was posted so long ago that the searchengine will not dig it up.I don't recall anyone posting a fixed ROM, but there are pointers for fixing it yourself. Is it worth it for broken code? I really don't think so. I used to until I knew about the broken part.The Self Test changes are not the only ones introduced in the XE OS rev. 3. They also fixed a bug in SIO that occasionally caused the "nine minute hang" when accessing a printer. And from reading another recent thread about the XEGS ROM, since the keyboard table moved, some games like missile command will fail to read the keyboard if they don't go through proper vectors...This issue is common to all XL/XE OS revisions, the XE and XEGS are not different from the XLs in this regard. Edited April 6, 2018 by Kr0tki 3 Quote Link to comment Share on other sites More sharing options...
R.Cade Posted October 29, 2018 Share Posted October 29, 2018 FYI, this reverse-BASIC patch does not seem to work on the XEGS (Changing F0 to D0 and recalulating checksum). It ignores it and BASIC is still enabled... I guess the code is slightly different due to the option to enable Missile Command, etc? 1 Quote Link to comment Share on other sites More sharing options...
1050 Posted October 29, 2018 Share Posted October 29, 2018 Quite possibly yes, but the XEGS in my experience had a mindset all it's own too. It would get 'latched' into flaky behavior and do what it wanted in other words. Not exactly sure what is going on there but it might come back to the unusually high failure rate of OS eproms on the XEGS. When that is borderline then there is no telling where the real issue is. Try to use 200ns speed eproms for burning the XEGS OS and see if that isn't the reason first. Just a suggestion, it does work better in other machines when this can be done - but the XEGS isn't my go to machine and I have no results to speak from. 1 Quote Link to comment Share on other sites More sharing options...
R.Cade Posted October 29, 2018 Share Posted October 29, 2018 Mine takes an extremely long time to forget what's in RAM and do a cold reset. A minute or more... no exaggeration. That is one reason I put in a replacement ROM, so I could actually cold boot the thing. 1 Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted October 29, 2018 Share Posted October 29, 2018 There is also a capacitor that holds the memory like that, I forget which ATM but you can search it out. Does wonders for not losing type in code during slight power issues, but sucks when you just want to bop in and out and around when searching for or testing whatever it is your flitting to and from. 1 Quote Link to comment Share on other sites More sharing options...
R.Cade Posted October 29, 2018 Share Posted October 29, 2018 (edited) I measured the power to the RAM chips and it goes to 0v immediately after power off. It is actually the RAM chips somehow holding it internally. Edited October 29, 2018 by R.Cade Quote Link to comment Share on other sites More sharing options...
+Nezgar Posted October 29, 2018 Share Posted October 29, 2018 I've heard this is also a common issue with 600XL's after upgrading to 64K with 2x4464's. Quote Link to comment Share on other sites More sharing options...
1050 Posted October 29, 2018 Share Posted October 29, 2018 My theory is that the extended hang time for memory on the 4464 equipped devices is the better silicon used in those. Just keeps the memory cells at their proper level of charge very much longer. And no work around exists that I know of. So Mathy asked if there was a software solution when I was writing MyRD code. So I put in a keypress combo that will 'bomb' the box and force a coldstart no matter what. To do this fastest one does a RUN AT E477 and then press SHIFT + 1 when the RUN AT screen goes away. It will reboot twice, with the second one being the wipe out bombed coldstart deal. Since those times some of the newer toys also have a software solution built into them and I would think they are the better way to deal with this issue. Not sure my method is foolproof since it must boot DOS again in order to run the MyRD autorun.sys file too. But it was the only stick I had so I used it. Just for grins you might try it out? http://www.mathyvannisselroy.nl/mydos.htm 1 Quote Link to comment Share on other sites More sharing options...
+Nezgar Posted October 29, 2018 Share Posted October 29, 2018 Oh how I (not fondly) remember the days of hammering on the reset button on my 320XE for 30 seconds straight to try to get it to cold start to save my ramdisk with something valuable still on it after reset-proof crash.... eventually It would trigger a cold start if you hammered it fast enough! 2 Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted October 30, 2018 Share Posted October 30, 2018 Oh how I (not fondly) remember the days of hammering on the reset button on my 320XE for 30 seconds straight to try to get it to cold start to save my ramdisk with something valuable still on it after reset-proof crash.... eventually It would trigger a cold start if you hammered it fast enough! omg I still do this! Quote Link to comment Share on other sites More sharing options...
tjlazer Posted November 10, 2018 Share Posted November 10, 2018 Anyone update this with the Rev D OS to test for 128k? Quote Link to comment Share on other sites More sharing options...
+Nezgar Posted November 10, 2018 Share Posted November 10, 2018 Anyone update this with the Rev D OS to test for 128k? See earlier in the thread. Rev. C added testing of the extended 64K in the 130XE, but due to a bug with the PIA bits used, it actually only tests 2 of the 4 banks. So, there's actually not much value in C or D vs B, as you're better off testing extended memory with a program written to do that. Especially if you have installed more than 128K. Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted November 10, 2018 Share Posted November 10, 2018 so why not fix the pits and call it a day... Quote Link to comment Share on other sites More sharing options...
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