18apr90

	Fixed disassembly of cmpmi, movmi.  Length was not being
	adjusted according to the formula: (num - 1) * i.

	Fixed disassembly of movsui and movusi.  Formerly was
	disassebled with third argument like other format 8
	instructions.

	Separated expression parser from debugger.c into new file:
	express.c.  Added &, |, and ~ operators to expression syntax.

19apr90

	Changed ICU address in scsi.c from 0xffffffe0 to 0xfffffe00.

	Fixed bug: mov[x|z]bw disassembled as mov[x|z]bb.

	Updated comments in express.c.

	Mentioned, in help for scsi raw, read, and write commands,
	that scsi_adr should be a power of two.

20apr90

	Fixed SCSI pseudo-dma bug which caused last few bytes of read
	transfer to be lost.

	Uuencoded and posted new version: "Fri Apr 20 09:32:29 PDT 1990"

	In scsi.c rounded status and message buffer sizes up to 4 since
	pseudo-dma always transfers 4 bytes.

	New EPROM for me: "Sat Apr 21 13:25:26 PDT 1990".

23apr90

	When user program executes return, used to print wrong message
	because the wrong code was loaded in _isr_bpt in resume532.s.

	Split scsi.c into scsi_low.c and scsi_hi.c.  Added a device
	table to support unusual device features like non-extended SCSI
	commands and initialization commands.  Updated comments about
	pseudo-dma.

	For input line editting, made ^x equivalent to ^u and DEL
	equivalent to ^h.

25apr90

	Still printed wrong message when user program returned.  FAKE_TRAP
	in init532.c had wrong value.  Replaced with a more robust scheme
	using sizeof.

	Changed to direct-exception mode.

	New EPROM for me: "Wed Apr 25 08:59:02 PDT 1990"

26apr90

	Default drive did not work because of bad loop count in scsi_hi.c.
	Fixed it.

	Made "edit" more general so that it edits bytes, words, or doubles.

	Made "set" more general so that it can also set a byte, word, or
	double in memory.

24may90

	Jordan was getting error messages with his disk which evidently
	wants some command before the first read or write.  Made the
	default drive do a "test unit ready" and "re-zero unit" on
	initialization.

4jun90

	Per Ian Dall's request changed dblib.s, db_setbaud().

		old: movb    h'3,14(r2)      ; set RTS on
		new: movb    h'f,14(r2)      ; set RTS and DTR on

14jul90

	Handle BUSY SCSI status in scsi_hi.c -- insert delay.
