Moon Shuttle (alternate) for the Dragon
Posted: Mon Sep 25, 2023 9:13 pm
Hello,
lately I found an alternate version of the game "Moon Shuttle" for the CoCo, uploaded by Richard Kelly in the CoCo Facebook group
As it didn't work for the Dragon, I unassembled the binary with F9DASM and then searched for ROM Subroutine calls, I changed them
for the corresponding ones for the Dragon and finally I searched for points where the keyboard was checked, there are seven checks,
but only five of them required patching to use the Dragon keypresses
Once tested, I have put it inside a VDK with a basic loader to make things easier ...
Just mount the disk and issue
RUN"MOONSALT.BIN
or to avoid typing that much just enter
RUN"GO
The game works with keyboard (the four cursor arrows and space) and accepts the left Joystick too ...
Press Break to exit a game and return to the main menu
enjoy!
cheers!
pere
lately I found an alternate version of the game "Moon Shuttle" for the CoCo, uploaded by Richard Kelly in the CoCo Facebook group
As it didn't work for the Dragon, I unassembled the binary with F9DASM and then searched for ROM Subroutine calls, I changed them
for the corresponding ones for the Dragon and finally I searched for points where the keyboard was checked, there are seven checks,
but only five of them required patching to use the Dragon keypresses
Once tested, I have put it inside a VDK with a basic loader to make things easier ...
Just mount the disk and issue
RUN"MOONSALT.BIN
or to avoid typing that much just enter
RUN"GO
The game works with keyboard (the four cursor arrows and space) and accepts the left Joystick too ...
Press Break to exit a game and return to the main menu
enjoy!
cheers!
pere