Note:	Version 4.00 to 4.01 ROMs only work in HCS II SCs that have been 
	upgraded to use the Z80S180 CPU.

	As of version 4.20, the sources have been merged and either speed
	SC can run the same feature sets.  ROM images denoted with a -9
	are for HD64180/Z80180 9.216MHz-based SCs, while images with a -18
	are for Z80S180 18.423MHz-based SCs.

	Questions about this code may be directed to the Circuit Cellar BBS.

	For COMM-LINKS, refer to the HCS docs web page for revision info.
	(/hcs/hcs-sources/index.html)

	The PL-Link ROM code comes in two variants:  One for 50Hz "-50" and
	the other in 60Hz.