Added identification of WDC or AMD part based on microcode version

Added measure and reporting of SCSI controller input clock
Improved handling of user abort (^C)
For -r command, added optional register number to read a single register
For -r command, added optional value to update a single register
Added -p command to probe SCSI bus for device presence (not well-tested)
Added decode of SCSI Command Phase register
Added support for register access of 33C93B parts using undocumented command
Improved SDMAC version check to be more careful about identifying SDMAC-04

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2023 Chris Hooper
+Copyright (c) 2024 Chris Hooper
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

Makefile

@@ -17,9 +17,9 @@ CFLAGS  := -Wall -Wno-pointer-sign -Os
 
 CFLAGS += -fomit-frame-pointer
 
-#LDFLAGS := -Xlinker -Map=$(PROG).map -noixemul
-#LDFLAGS = -Xlinker [email protected] -mcrt=clib2 -lnet
-LDFLAGS = -Xlinker -Map=$@.map -Wa,-a > $@.lst -mcrt=clib2
+# clib2 crashes on exit under Kickstart 2.x
+#LDFLAGS = -Xlinker [email protected] -Wa,-a > [email protected] -mcrt=clib2
+LDFLAGS = -Xlinker -Map=$@.map -Wa,-a > $@.lst -noixemul
 
 #CFLAGS += -g
 #LDFLAGS += -g

README.md

@@ -1,6 +1,44 @@
 Amiga 3000 SDMAC and WD33C93A register test utility
 
 This is a small utility which can identify the Amiga 3000 SDMAC version
-and talk through the SDMAC to read WD33C93A registers.
+and talk through the SDMAC to read WD33C93A registers and identify that
+chip as well.
 
-Updated so this can be built using the [amigadev/crosstools](https://hub.docker.com/r/amigadev/crosstools) Docker container and VSCode
+It can be built using the [amigadev/crosstools](https://hub.docker.com/r/amigadev/crosstools) Docker container and VSCode or can be built using Bebbo's gcc Amiga cross-compiler from Linux.
+
+-------------------------------------------------------
+
+Example output
+
+<PRE>
+9.OS322:> sdmac
+Memory controller:   Ramsey-07 $f
+Ramsey config:       1Mx4, 238 clock refresh
+SCSI DMA Controller: SDMAC-02
+SCSI Controller:     WD33C93A 00-08 microcode 09
+WDC Configuration:   14.3 MHz, Polled Mode, 245 msec timeout, Async
+
+Ramsey test:  PASS
+SDMAC test:   PASS
+WDC test:     PASS
+</PRE>
+
+-------------------------------------------------------
+
+For more information on WD33C93 and compatible chips, including high resolution photos of chip packages, see the following:<BR>
+<A HREF="http://eebugs.com/scsi/wd33c93/">
+    http://eebugs.com/scsi/wd33c93/
+</A>
+
+Actual samples from my part stock
+<PRE>
+                 mcode datecode
+WD33C93    00-02 00    8849 115315200102
+WD33C93A   00-03 00    8909
+WD33C93A   00-04 00    9040 040315200102  9109 041816200102
+WD33C93A   00-06 08    9018 058564200302
+AM33C93A         08    9022 9009 1048EXA A   8950 1608EXA A
+WD33C93A   00-08 09    9209 F 25933A5-3503  9205 F 25890A2-3503
+WD33C93B   00-02 0d    1025 E 2513427-3702
+AIC-33C93B       0d    EBACA724
+</PRE>