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 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.
[PCjs Machine "ibm5150"]
Waiting for machine "ibm5150" to load....
Volume in drive A is DISK1 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) 99404 bytes 59904 bytes free
Volume in drive A is DISK2 Directory of A:\ PAS2 EXE 99200 8-31-81 12:00p 1 file(s) 99200 bytes 60928 bytes free
Volume in drive A is DISK3 Directory of A:\ PASCAL 50 8-31-81 12:00p PASCAL LIB 83456 8-31-81 12:00p 2 file(s) 83506 bytes 76288 bytes free
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 12:00a 9 file(s) 325374 bytes 31744 bytes free