crasm(1) on Linux
The text dc18262285d4, as Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch) shipped it.
Cross assembler for 6800/6801/6803/6502/65C02/Z80
Flags it lists
-
-l -
-o -
-s -
-x