Seems like A and B set playback problem is about memory settings.
Ok, I found way to playback all rampage recordings +propably many others.
Background: TJT's rampage didn't playback correctly "windowed".
Metrackle's rampage didn't playback with fullscreen.
Gameguru's Jedi recording didn't playback(with m37b8, dos)
Got them all working at changing memory settings of command.com(dosprompt)
. see picture below, normally dosprompt properties are all "auto"...with mamep.exe and m37b8
...DOS versions of WolfMame and Mame, played back at dosprompt...
TJT's rampage: works when all memory settings are "auto", or EMS "none"
(gets only to 23100 when XMS is "none")
Metrackle's rampage: works when XMS is "none" (gets only at 28200 when EMS is "auto","none" or any value)
Gameguru's jedi: works when XMS or EMS is "none"
(if all memory settings are handled by windows, desyncs at very beginning)
So you should be able to playback any of these so called A+B set games with dosmame, simply changing XMS- or EMS-memory to "NONE" at command.com properties
(picture below)...or better, changing properties for whatever shortcut you use for dosprompt. Works fine for me, hope it works for other marpers too.
1. changing memory settings
2. mem /c -command displayed at my machine when XMS memory is defined as "none".
(when EMS is "none", 2 lines where ems is mentioned are missing, and there should be more free xms)
(you may have to also put in your config.sys, lines: