+DrVenkman Posted February 6, 2021 Share Posted February 6, 2021 I was fooling around with my SIDE3 cartridge tonight with a mostly-stock 64K 1200XL. As we all know, and as I verified with this particular machine, any version of Atari BASIC on a 48K or 64K Atari computer will give a result of 37,902 bytes free with nothing else loaded. However, when running the same Atari BASIC rom from SIDE3 results in 8K less free memory (29,710 bytes free, exactly 8,192 bytes less than it should be for a 48K or better A8 machine). Can anyone explain why this is so? SHOULD it be so? Is this a bug or a "feature" of SIDE3? Does the same occur with every emulated cartridge ROM? 1 1 Quote Link to comment Share on other sites More sharing options...
BillC Posted February 6, 2021 Share Posted February 6, 2021 5 hours ago, DrVenkman said: Can anyone explain why this is so? SHOULD it be so? Is this a bug or a "feature" of SIDE3? Does the same occur with every emulated cartridge ROM? It sounds like the SIDE3 is recognizing the emulated BASIC as 16KB instead of 8KB. Quote Link to comment Share on other sites More sharing options...
flashjazzcat Posted February 6, 2021 Share Posted February 6, 2021 Yeah: I'll test this shortly. Quote Link to comment Share on other sites More sharing options...
flashjazzcat Posted February 6, 2021 Share Posted February 6, 2021 Bug. Looking into a fix. Thanks to @DrVenkman for flagging it up! 4 Quote Link to comment Share on other sites More sharing options...
+DrVenkman Posted February 6, 2021 Author Share Posted February 6, 2021 3 hours ago, flashjazzcat said: Thanks to @DrVenkman for flagging it up No worries. I am sad that it never occurred to me to test it before last night. And to be fair, the only reason I *was* fooling round with it like this was @bob1200xl’s bump of his thread about Congo Bongo on a 1200XL from 10 years ago, which got me curious if it was the game code or the physical way the ROM was implemented on the cart. Then I saw another post where a new 1200XL owner is having problems with PAC-MAN, so I tried a physical copy of the game plus one emulated by SIDE3. Then I wanted to try something in BASIC and found this little bug. Quote Link to comment Share on other sites More sharing options...
flashjazzcat Posted February 6, 2021 Share Posted February 6, 2021 1 hour ago, DrVenkman said: Then I wanted to try something in BASIC and found this little bug. Sometimes it takes a while to shake them all out, especially when the bug meister is not on the job. 3 Quote Link to comment Share on other sites More sharing options...
Marius Posted February 7, 2021 Share Posted February 7, 2021 (edited) On 6-2-2021 at 4:18 PM, flashjazzcat said: Sometimes it takes a while to shake them all out, especially when the bug meister is not on the job. Yeah... the Bug meister rejected the job since he appeared not to be their hardware guy. Edited February 7, 2021 by Marius Quote Link to comment Share on other sites More sharing options...
+x=usr(1536) Posted July 25, 2021 Share Posted July 25, 2021 On 2/5/2021 at 8:04 PM, DrVenkman said: I was fooling around with my SIDE3 cartridge tonight with a mostly-stock 64K 1200XL. As we all know, and as I verified with this particular machine, any version of Atari BASIC on a 48K or 64K Atari computer will give a result of 37,902 bytes free with nothing else loaded. However, when running the same Atari BASIC rom from SIDE3 results in 8K less free memory (29,710 bytes free, exactly 8,192 bytes less than it should be for a 48K or better A8 machine). Late to the party on this, but I just saw the same behaviour on my mostly-stock (UAV and +5V SIO mod; otherwise untouched) 1200XL. This was with firmware 0.40 and I'll confirm that it happened with BASIC revs. A, B, and C. 2 Quote Link to comment Share on other sites More sharing options...
flashjazzcat Posted July 25, 2021 Share Posted July 25, 2021 Thanks for flagging that up; I see no solution was yet found for this problem. Have asked Candle about it. 2 Quote Link to comment Share on other sites More sharing options...
Marius Posted July 25, 2021 Share Posted July 25, 2021 3 hours ago, flashjazzcat said: Thanks for flagging that up; I see no solution was yet found for this problem. Have asked Candle about it. The bugmeister might be interested to be on *YOUR* team again. 1 Quote Link to comment Share on other sites More sharing options...
flashjazzcat Posted July 26, 2021 Share Posted July 26, 2021 The problem of 8K carts being mirrored in the right cart window is apparently an FPGA bug, but fortunately there is a software workaround which will be implemented in the next loader update. 2 Quote Link to comment Share on other sites More sharing options...
flashjazzcat Posted July 27, 2021 Share Posted July 27, 2021 Fix here: 2 1 Quote Link to comment Share on other sites More sharing options...
+x=usr(1536) Posted July 27, 2021 Share Posted July 27, 2021 Confirmed fixed in 0.43 Thank you, FJC! 1 Quote Link to comment Share on other sites More sharing options...
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