LM ERICSSON				PASGEN MANUAL                   1(3)
[L/Ufe Seved Torstendahl                1977-04-05      A        
 
 
 
 
 
 
 
		PASCAL FOR PDP-11 UNDER RSX-11M
		===============================
 
		COMPILER GENERATION MANUAL
		==========================
 
 
 
 
		A compiler for Pascal running under RSX-11M is available.
		There is also a crosscompiler running on DEC-10. This
		manual describes how these compilers can be generated
		from the distribution set.
 
		Both compilers generate relocatable object modules
		acceptable to TKB of RSX-11M and other PDP-11 linkers.
		It requires a library of object modules to supply the
		interface to the operating system.
 
		The first step is to transfer the following files to
		UIC [1,24] on a PDP-11 with RSX-11M:
 
			P11PAS.OBJ	*
			P11FIL.OBJ	*
			P11TTY.OBJ	*
			PASLIB.OBJ
			PASEIS.OBJ
			PASFIS.OBJ
			PASFPP.OBJ
			PASBLD.CMD	*
			PASBLD.ODL	*
			PASGEN.CMD
 
			*	only if a PDP-11 resident compiler is wanted.
 
		Then the command file PASGEN.CMD can be executed:
			>@PASGEN



LM ERICSSON				PASGEN MANUAL                   2
                                        1977-04-05      A        
 
 
 
		The files contain:
 
		P11PAS.OBJ	Object modules of the general part of
				the compiler. Source: P11PAS.PAS .
 
		P11FIL.OBJ	Object modules of the part of the compiler
				that is specific for RSX-11M.
				Source: P11FIL.PAS .
 
		P11TTY.OBJ	Object modules of the part of the compiler
				written in assembler. Sources in SRCFIL.PAC .
 
		PASLIB.OBJ	Object modules to the runtime routine library.
				Sources in PASLIB.PAC .
 
		PASEIS.OBJ
		PASFIS.OBJ
		PASFPP.OBJ	Alternative object modules to the library
				for PDP-11's with extended instruction
				set, floating instruction set or floating
				point processor ( EIS, FIS or FPP ).
 
		PASGEN.CMD	Indirect command file for creation of a
				compiler and a runtime library.
 
		PASBLD.CMD
		PASBLD.ODL	Command file and overlay description for TKB
				to use when generating acompiler.
 
		USER.SWE
		USER.MAN	User manual. USER.SWE is an edition of the
				user manual intended for lineprinters with
				national character sets. Lines that require
				complementation by hand are denoted by a 
				period (.)in the left margin.
 
		PASGEN.MAN	Compiler generation manual.
 
 
 
 
		The full distribution set also contains the source modules:
 
		P11PAS.PAS	General part of Pascal compiler.
 
		P11FIL.PAS	PDP-11-specific part of compiler.
 
		P11CRS.PAS	DEC-10-specific part of compiler.
 
		UNPACK.OBJ	Object module for a program that can be
				used to unpack source modules  packed
				by the programs pack and packlib.
				They have here the extension .PAC .
 
		PASLIB.PAC	Source modules for the runtime library.
 
		SRCFIL.PAC	Sources for special routines of the
				compiler and for the pack and unpack
				programs.



LM ERICSSON				PASGEN MANUAL                   3
             1977-04-05      A        
 
 
 
		Special programs:
 
		UNPACK		Asks for the name of a packed file
				and splits it into its constituent
				files.
 
		LISTPACK	List the names of files in a packed file.
 
		PACK		Can pack arbitrary source files into a
				new packed file.
 
		PACKLIB		Packs the sources of the runtime library
				into the file PASLIB.PAC .
 
 
 
 
 
		To generate a crosscompiler on a DEC-10 proceed as
		follows:
 
		Transfer the files P11PAS.PAS and P11CRS.PAS to
		DEC-10 and compile them with the PASREL compiler from
		Hamburg. Load the produced modules and save the core
		image:
			.LOAD P11PAS,P11CRS
			.SAVE P11PAS 64
		(64 is enough but maybe less will suffice.)
 
		When run the compiler will ask for the filename of the
		source. A full name including volume and p,pn is allowed.
		Filename extension is not necessary if it is .PAS .
		Two new files are produced: a list file with extension
		.LST and an object file with extension .OBJ .
		Example:
			.RUN P11PAS
			*PROG
		will produce the files PROG.LST and PROG.OBJ from PROG.PAS .
 
		The object file contains one PDP-11 byte/DEC-10 word
		and is in PDP-11 DOS format. It can be transferred
		to PDP-11 on a DECtape or other suitablemedium.
		Example:
			.MOUNT DTA:DT/V:DTNAME/WE
			.R FILEX
			*DT:/V/Q/I=PROG.OBJ
			*^C
 
 
		This object module can then be retrieved on a PDP-11
		with RSX-11M by:
			>FLX SY:/RS=DT:*.*/DO/FB