Model           Memory 	Filename

DECserver 90L+	none 	PROM-based; no firmware downloaded
DECserver 90TL	1 MB 	MNENG1.SYS
DECserver 90TL	1 MB 	MNENG2.SYS(Some descriptions say 4 MB is required)
DECserver 90M	1 MB 	MNENG2.SYS (Some descriptions say 4 MB is required)
DECserver 90M	2 MB 	MNENG3.SYS
DECserver 90M+	4 MB 	MNENG4.SYS
DECserver 100		PS0801ENG.SYS
DECserver 200		PR0801ENG.SYS
DECserver 200		DP0601ENG.SYS
DECserver 300		SH1601ENG.SYS
DECserver 700	1 MB 	WWENG1.SYS
DECserver 700	>2 MB 	WWENG2.SYS
DECserver 900TM		WWENG2.SYS