The Pro-DOS (Coupé´s CP/M v2.2) was patched for the AL+. CP/M records could be stored on one CF card together with B-DOS records. You can change records (as floppy disks) by use of the RCD command in the CP/M command line.
See Pro-DOS Resource Pages for details.
C.soon... ZSC.LBR, PMAUTOAE.