On Thu, 7 Aug 2025 14:36:04 -0400, Phil Smith III <[email protected]> wrote:
>>From: IBM Mainframe Discussion List <[email protected]> On Behalf Of >>Paul Edwards >>You are required to recompile your "PCDOS" programs with gccmvs to produce >>S/370 code. >Ohhh! That's what I hadn't grokked. That's interesting indeed. OK, Let's make this simple to understand from what I can remember about it. Paul can verify or correct as needed. 1. Forget the name PCDOS because it's misleading. 2. It has IPLTEXT that is valid for S370 hardware (maybe S390 & z/Arch). It loads his program called PCDOS from IBM mainframe disks. 3. In theory, his program could run on real hardware that his program supports. 4. Alternatively, you can emulate that hardware on your PC using the hercules-390.org software. 5. Paul mentions GCC (c compiler) which is misleading. You can use the S370 IPLTEXT with the program compiled for S370. Alternatively, you can use his x86 boot sector and compile the program for x86. 6. His program provides a prompt regardless of the hardware. You issue commands to his prompt. I believe one of the commands is "dir" which I believe he designed to access the disk VTOC and handle basic dataset access. I believe he is equating this prompt to a PC / Windows DOS prompt which has a very limited set of commands that he supports. Ask Paul if you have further questions as this is all I can remember from the discussion years ago. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
