JohnElliott

Change the declaration on line 735 from 
static char no_patch[] = to
static unsigned char no_patch[] =  

Change the declaration on line 735 from 
static char no_patch[] = to
static unsigned char no_patch[] =  

That's apparently caused by the version of libpng in use. I think it should be possible to replace
png_ptr->jmpbuf with 
png_jmpbuf(png_ptr) and see if that helps. You may have to do it in several files.

Well, Linux is my main operating system and the one I wrote JSWED on, so it ought to be possible to build it (I use Ubuntu 24.04.4 LTS). So I'd:
Install the SDL 1.x compatibility libraries. In Ubuntu these are the libsdl1.2 and libsdl1.2-dev packages. I think libsdl-image1.2 and libsdl-image1.2-dev may be required as well. Install libxml (packages: libxml2 and libxml2-dev) Downloading the source code for JSWED from the link @jetsetdanny gave. Unpack the archive into a directory. Open a terminal window. Use cd to change to the directory where you unpacked jswed, and type ./configure && make && sudo make install If it built and installed without errors, then typing jswed at a command prompt will launch it. 

Well, Linux is my main operating system and the one I wrote JSWED on, so it ought to be possible to build it (I use Ubuntu 24.04.4 LTS). So I'd:
Install the SDL 1.x compatibility libraries. In Ubuntu these are the libsdl1.2 and libsdl1.2-dev packages. I think libsdl-image1.2 and libsdl-image1.2-dev may be required as well. Install libxml (packages: libxml2 and libxml2-dev) Downloading the source code for JSWED from the link @jetsetdanny gave. Unpack the archive into a directory. Open a terminal window. Use cd to change to the directory where you unpacked jswed, and type ./configure && make && sudo make install If it built and installed without errors, then typing jswed at a command prompt will launch it. 

Well, Linux is my main operating system and the one I wrote JSWED on, so it ought to be possible to build it (I use Ubuntu 24.04.4 LTS). So I'd:
Install the SDL 1.x compatibility libraries. In Ubuntu these are the libsdl1.2 and libsdl1.2-dev packages. I think libsdl-image1.2 and libsdl-image1.2-dev may be required as well. Install libxml (packages: libxml2 and libxml2-dev) Downloading the source code for JSWED from the link @jetsetdanny gave. Unpack the archive into a directory. Open a terminal window. Use cd to change to the directory where you unpacked jswed, and type ./configure && make && sudo make install If it built and installed without errors, then typing jswed at a command prompt will launch it. 

I get to see people studying my work. And, tbh, I'm amazed the details of the cheat mode haven't been common knowledge for years, considering how long JSW128's been out there.

I get to see people studying my work. And, tbh, I'm amazed the details of the cheat mode haven't been common knowledge for years, considering how long JSW128's been out there.

I just found this thread. How amusing!

I just found this thread. How amusing!

I've managed to download all the pictures (and the messages, though in a JSON format that isn't particularly clear to read). I've also leeched the 'manicminerandjetsetwilly-nonspectrum' and 'jetsetracing' groups, which are the other two JSW-related groups I was a member of. You can find the results attached to this message.
jetsetracing.zip
manicminerandjetsetwilly.zip
manicminerandjetsetwilly-nonspectrum.zip

Yahoo are shutting down their groups system with effect from December 14th. If anyone wants to try and salvage the 7234 messages on the old MM/JSW group, now would be a good time to start.
 
There's some discussion of possible archiving tools at r/DataHoarder. I'm currently experimenting with YahooGroups-Archiver under Linux.

Yahoo are shutting down their groups system with effect from December 14th. If anyone wants to try and salvage the 7234 messages on the old MM/JSW group, now would be a good time to start.
 
There's some discussion of possible archiving tools at r/DataHoarder. I'm currently experimenting with YahooGroups-Archiver under Linux.

Yahoo are shutting down their groups system with effect from December 14th. If anyone wants to try and salvage the 7234 messages on the old MM/JSW group, now would be a good time to start.
 
There's some discussion of possible archiving tools at r/DataHoarder. I'm currently experimenting with YahooGroups-Archiver under Linux.

Ah yes, I remember - because an opening wall is of arbitrary height it was easier to do it from the top or bottom than from the middle.
 
Looking at my original source, there's a comment:
; ;When all segments have slid, change cell attributes. ; which suggests that I intended it to behave as I wrote it.

IIRC, the opening-wall code is pretty much lifted from the Kong Beast rooms in Manic Miner, so that's the best place to start looking to see what the intended behaviour is.

Ah yes, I remember - because an opening wall is of arbitrary height it was easier to do it from the top or bottom than from the middle.
 
Looking at my original source, there's a comment:
; ;When all segments have slid, change cell attributes. ; which suggests that I intended it to behave as I wrote it.

Ah yes, I remember - because an opening wall is of arbitrary height it was easier to do it from the top or bottom than from the middle.
 
Looking at my original source, there's a comment:
; ;When all segments have slid, change cell attributes. ; which suggests that I intended it to behave as I wrote it.

IIRC, the opening-wall code is pretty much lifted from the Kong Beast rooms in Manic Miner, so that's the best place to start looking to see what the intended behaviour is.

IIRC, the opening-wall code is pretty much lifted from the Kong Beast rooms in Manic Miner, so that's the best place to start looking to see what the intended behaviour is.

I've added these examples to the Trivia page for JSW on TV Tropes.

It means that at least one byte in a location touched by the patch is neither the original one from JSW, nor the modified one from the patch. So JSWED cannot safely apply or deapply the patch.

Not guilty, yerhonner. The adjacent ropes patch doesn't use any of this space.

It means that at least one byte in a location touched by the patch is neither the original one from JSW, nor the modified one from the patch. So JSWED cannot safely apply or deapply the patch.

It means that at least one byte in a location touched by the patch is neither the original one from JSW, nor the modified one from the patch. So JSWED cannot safely apply or deapply the patch.