work around JWasm 2.19 flaw by defining RCODE prior to using

Author: boeckmann

drbio/Makefile

@@ -65,7 +65,7 @@ bin/clock.obj: clock.asm drmacros.equ ibmros.equ request.equ driver.equ
 
 bin/console.obj: console.asm drmacros.equ ibmros.equ request.equ driver.equ
 
-bin/disk.obj: disk.asm biosgrps.asm drmacros.equ ibmros.equ request.equ bpb.equ udsc.equ driver.equ keys.equ biosmsgs.def
+bin/disk.obj: disk.asm drmacros.equ ibmros.equ request.equ bpb.equ udsc.equ driver.equ keys.equ biosmsgs.def
 
 bin/serpar.obj: serpar.asm drmacros.equ ibmros.equ request.equ driver.equ
 

drbio/init.asm

@@ -54,6 +54,9 @@
 ENDCODE		segment public byte 'ENDCODE'
 ENDCODE		ends
 
+RCODE		segment public word 'RCODE'
+RCODE		ends
+
 RESUMECODE	segment public byte 'RESUMECODE'
 RESUMECODE	ends
 
@@ -1181,7 +1184,7 @@ ifndef ROMSYS
 endif
 RCODE_ALIGN	ends
 
-RCODE		segment public byte 'RCODE'
+RCODE		segment
 
 rcode_header	dw	0