tree dac51adb822efcc48474e844b4ce4c6250d5e79a
parent 4001f5294cb3a1a1600ef3efeff4d29345918111
author Adrien Destugues <pulkomandy@pulkomandy.tk> 1608238144 +0100
committer Adrien Destugues <pulkomandy@pulkomandy.tk> 1608238144 +0100

Fix crash with Albireo disk ROM

cas_in_open can corrupt IX. IX must be preserved in asm code otherwise SDCC
is confused.