IRF Posted February 2, 2020 Report Share Posted February 2, 2020 Unfortunately, a disassembly for the subroutine at #C4B6 (which picks up the location of the guardian tables, there being more than one of those in the JSW128 game engine) is not provided athttp://www.seasip.in...w/jswdiffs.html For future reference, this is the code referred to above: ORG #C4B6 29 ADD HL,HL 29 ADD HL,HL 29 ADD HL,HL ED 4B DF 80 LD BC, (#80DF) 09 ADD HL,BC C9 RET The guardian table for the current room is stored in a pair of bytes in the room definition at offset #DF-#E0. jetsetdanny 1 Quote Link to comment Share on other sites More sharing options...
jetsetdanny Posted February 2, 2020 Author Report Share Posted February 2, 2020 So it seems that most of the released JSW64 engine games were built from one of the variants of 'Jet Set Willy 64' as a base file, all of which display the small visual bug in the Invincibility icon. The only exception which I have found is John's 'Jet Set Willy 64: Manic Miner', which must have been developed separately at an earlier stage before the bug crept into the data. "Jet Set Willy 64" and "Jet Set Willy 64: Manic Miner" were never gamma-released by John Elliott as TAP files. The gamma releases were in the form of installers. In that sense, "Jet Set Willy 64: Manic Miner" did not originate from "Jet Set Willy 64" (it was a separate installer). Hence it's understandable that a glitch which is in one of these projects fortunately avoided the other project. IRF and andrewbroad 2 Quote Link to comment Share on other sites More sharing options...
jetsetdanny Posted February 2, 2020 Author Report Share Posted February 2, 2020 (edited) Slightly off-topic: Danny, in the course of researching the above, I noticed that you don't appear to have an entry at JSWCentral.org for Andrew Broad's 'Manic Miner: Matthew Smith 2008 Remix' (which was released as a bonus with Andrew's 'Flash Manic Miner', and which formed the starting point - along with 'reniM cinaM' - for the JSWMM release 'Manic Mixup')? I do. It's here. "Manic Miner: Matthew Smith 2008 Remix" is a version of the original "MM", not a new game, in my classification. Edited February 2, 2020 by jetsetdanny IRF 1 Quote Link to comment Share on other sites More sharing options...
IRF Posted February 3, 2020 Report Share Posted February 3, 2020 I do. It's here. "Manic Miner: Matthew Smith 2008 Remix" is a version of the original "MM", not a new game, in my classification. Ah yes, I forgot to search on the separate tab labelled "Versions of MM." jetsetdanny 1 Quote Link to comment Share on other sites More sharing options...
Spider Posted February 3, 2020 Report Share Posted February 3, 2020 I think its probably reasonable to say some of the relevant code is not listed on his site ? :) By that I mean not giving "it all away" I've not really looked into this, I did mean to a long time ago but what with one thing and another etc... Quote Link to comment Share on other sites More sharing options...
IRF Posted February 3, 2020 Report Share Posted February 3, 2020 I think its probably reasonable to say some of the relevant code is not listed on his site ? :) By that I mean not giving "it all away" You are right that the code which activates the extra Cheat Mode is not provided in John's disassembly of the rest of his code changes for the JSW128 game engine. Spider 1 Quote Link to comment Share on other sites More sharing options...
IRF Posted February 7, 2020 Report Share Posted February 7, 2020 (edited) I think you have one too many bytes in the sequence below. Where I have highlighted four consecutive values of '1F', there are in fact only supposed to be three '1F's (at #C491-93). 1f 1f no keys pressed 1d 1f w 17 1f r 1f 1e p 1f 1b i 1f 1f no keys pressed 17 1f r 1f 1f no keys pressed 17 1f r 1f 1f no keys pressed 1f 1d o 1b 1f e 1f 17 u 1f 1f no keys pressed Danny, further to the above, I would point out that correcting your error will mean that there are an odd number of data points in the above table. So bear that in mind - "when a convenient time presents itself" - as you contemplate the possible implications of that for the structure of the data... Edited February 7, 2020 by IRF Spider 1 Quote Link to comment Share on other sites More sharing options...
jetsetdanny Posted February 7, 2020 Author Report Share Posted February 7, 2020 Thanks for the tip, Ian! IRF and Spider 2 Quote Link to comment Share on other sites More sharing options...
JohnElliott Posted March 3, 2020 Report Share Posted March 3, 2020 I just found this thread. How amusing! IRF and Spider 2 Quote Link to comment Share on other sites More sharing options...
IRF Posted March 3, 2020 Report Share Posted March 3, 2020 I cracked the cheat code a while ago, as you know (but kept it under my hat). Daniel was halfway to cracking it when he started this thread. Then he got distracted by another project whose release is imminent - after which he should be able to resume work on this puzzle... Spider and jetsetdanny 2 Quote Link to comment Share on other sites More sharing options...
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