License headers added.

drv/README.md

@@ -666,6 +666,8 @@ KPCOMM is distributed under the MIT License (`LICENSE.md`): it may be used,
 changed and shipped, alone or with a program, as source or as the built
 driver, as long as the copyright and permission notice go with it.  The
 license covers this folder; the rest of the repository is not under it.
+Each source file here opens with a short header that says so
+(`SPDX-License-Identifier: MIT`).
 
 Built with Open Watcom (`watcom.mk`), the driver also carries Open Watcom
 code (its DLL start-up and C library helpers), and Open Watcom's license

drv/commdrv.c

@@ -1,3 +1,7 @@
+// Part of KPCOMM, Copyright (c) 2026 Scott Duensing, under the MIT License.
+// See LICENSE.md for license information.
+// SPDX-License-Identifier: MIT
+//
 // commdrv.c - KPCOMM.DRV -- High-speed COMM.DRV replacement
 //
 // Exported COMM.DRV entry points (Windows 3.1 DDAG signatures), port

drv/commdrv.def

@@ -1,3 +1,7 @@
+; Part of KPCOMM, Copyright (c) 2026 Scott Duensing, under the MIT License.
+; See LICENSE.md for license information.
+; SPDX-License-Identifier: MIT
+
 LIBRARY COMM
 DESCRIPTION 'KPCOMM -- High-Speed Serial Communications Driver'
 EXETYPE WINDOWS

drv/commdrv.h

@@ -1,3 +1,7 @@
+// Part of KPCOMM, Copyright (c) 2026 Scott Duensing, under the MIT License.
+// See LICENSE.md for license information.
+// SPDX-License-Identifier: MIT
+//
 // commdrv.h - KPCOMM.DRV -- High-speed COMM.DRV replacement
 //
 // Types, UART/PIC/DPMI/BIOS constants, port state, and the prototypes

drv/isr.c

@@ -1,3 +1,7 @@
+// Part of KPCOMM, Copyright (c) 2026 Scott Duensing, under the MIT License.
+// See LICENSE.md for license information.
+// SPDX-License-Identifier: MIT
+//
 // isr.c - Interrupt-time code for KPCOMM.DRV
 //
 // Hardware interrupt entry points, DPMI vector hooking with a per-IRQ

drv/kpcomm.lnk

@@ -1,3 +1,7 @@
+# Part of KPCOMM, Copyright (c) 2026 Scott Duensing, under the MIT License.
+# See LICENSE.md for license information.
+# SPDX-License-Identifier: MIT
+#
 # kpcomm.lnk -- wlink directives for KPCOMM.DRV built with Open Watcom
 # (watcom.mk): what commdrv.def gives MSVC's linker. The module name stays
 # COMM, as USER.EXE imports the driver by that name, and the entry points

drv/lpt.c

@@ -1,3 +1,7 @@
+// Part of KPCOMM, Copyright (c) 2026 Scott Duensing, under the MIT License.
+// See LICENSE.md for license information.
+// SPDX-License-Identifier: MIT
+//
 // lpt.c - Parallel port support for KPCOMM.DRV
 //
 // The stock COMM.DRV also serves LPT1-LPT3 (cid 0x80-0x82), and Windows

drv/makefile

@@ -1,3 +1,7 @@
+# Part of KPCOMM, Copyright (c) 2026 Scott Duensing, under the MIT License.
+# See LICENSE.md for license information.
+# SPDX-License-Identifier: MIT
+#
 # makefile - High-speed COMM.DRV replacement for MSVC 1.52
 #
 # Build: nmake

drv/watcom.mk

@@ -1,3 +1,7 @@
+# Part of KPCOMM, Copyright (c) 2026 Scott Duensing, under the MIT License.
+# See LICENSE.md for license information.
+# SPDX-License-Identifier: MIT
+#
 # watcom.mk -- KPCOMM.DRV built on Linux with Open Watcom v2's 16-bit
 # Windows target, for hosts without MSVC 1.52 (the makefile, for NMAKE, is
 # the MSVC build). Uses the Open Watcom JoeyLib's installer sets up, unless