---
layout: page
title: IBM Pascal Compiler 1.00
permalink: /disks/pcx86/tools/ibm/pascal/1.00/
---

IBM Pascal Compiler 1.00
------------------------

When the IBM Pascal Compiler 1.00 was originally released in August 1981, the standard IBM PC contained at most
two diskette drives (no hard drive), so compiling Pascal programs required using a "scratch disk" in drive B:
and then inserting each of the three 160Kb Pascal Compiler disks into drive A: to complete the compilation and
linking process.  Moreover, the user was required to copy LINK.EXE from their PC-DOS 1.00 diskette (the only version
of PC-DOS available at the time) to the third disk.

To make life a bit simpler (but only a bit), we've combined the contents of all three diskettes onto a 360Kb "Combined"
diskette, along with LINK.EXE from PC-DOS 1.00.  Here's the [DiskDump](/modules/diskdump/) command used to produce the
diskette image:

	diskdump --path="archive/PAS1/PAS1.EXE;PASKEY;ENTX6S.ASM;FILKQQ.INC;FILUQQ.INC;archive/PAS2/PAS2.EXE;
	archive/PAS3/PASCAL;PASCAL.LIB;../../../../dos/ibm/1.00/archive/PCDOS100/LINK.EXE" --format=json --label=PASCAL100
	--output=PASCAL100-DISKS.json --manifest 

It's important to use the original PC-DOS linker, because not all linkers will process IBM Pascal 1.00 object files
properly.  Given this dependency, it's odd that IBM didn't simply distribute the PC-DOS 1.00 linker on the third IBM
Pascal disk; there was certainly room for it, so it wouldn't have cost anything, and it would have reduced the risk
of using a newer and potentially incompatible linker.

NOTE: We do not have copies of the three original distribution disks.  However, based on information in IBM's Pascal
Compiler documentation, we were able to recreate the contents of the disks.  The file dates were arbitrarily selected
from the August 1981 time frame.

### Directory of IBM Pascal 1.00 (Disk 1)

	 Volume in drive A is PAS1       
	 Directory of  A:\

	ENTX6S   ASM     8320   8-31-81  12:00p
	FILKQQ   INC     5347   8-31-81  12:00p
	FILUQQ   INC     1513   8-31-81  12:00p
	PAS1     EXE    81408   8-31-81  12:00p
	PASKEY           2816   8-31-81  12:00p
	        5 File(s)     59904 bytes free

### Directory of IBM Pascal 1.00 (Disk 2)

	 Volume in drive A is PAS2       
	 Directory of  A:\

	PAS2     EXE    99200   8-31-81  12:00p
	        1 File(s)     60928 bytes free

### Directory of IBM Pascal 1.00 (Disk 3)

	 Volume in drive A is PAS3       
	 Directory of  A:\

	PASCAL             50   8-31-81  12:00p
	PASCAL   LIB    83456   8-31-81  12:00p
	        2 File(s)     76288 bytes free

### Directory of IBM Pascal 1.00 (Combined)

	 Volume in drive A is PASCAL100  
	 Directory of  A:\

	PAS1     EXE    81408   8-31-81  12:00p
	PASKEY           2816   8-31-81  12:00p
	ENTX6S   ASM     8320   8-31-81  12:00p
	FILKQQ   INC     5347   8-31-81  12:00p
	FILUQQ   INC     1513   8-31-81  12:00p
	PAS2     EXE    99200   8-31-81  12:00p
	PASCAL             50   8-31-81  12:00p
	PASCAL   LIB    83456   8-31-81  12:00p
	LINK     EXE    43264   8-04-81
	        9 File(s)     31744 bytes free