bower@DCA-EUR.ARPA (03/31/86)
It appears that the Mitek ZAS assembler sold with the MicroMint
SB180 board MAY have a minor bug or two in the parsing and error detec-
tion portion. While manually converting some code from Intel 8080 to
Zilog Z80 mnemonics and manually expand some macros (Why do things the
easy way when there is a hard way available?), I inadvertantly entered
the following incorrect mnemonics:
SUB A,' '
SUB HL,DE
Both, with some variants, were accepted by the assembler with no
errors or warnings. The first appeared to assemble properly, but should
have been entered as:
SUB ' '
The second was the cause of loss of hair over the weekend due to much
scratching. It generated a single 19H byte which is "ADD HL,DE". The
desired opcode should have been "SBC HL,DE", since the "SUB" is invalid
for 16-bit operations. Both of these are flagged by M80.
The version of ZAS used was 2.0 purchased last fall with the SB180.
HalRCONN@SIMTEL20.ARPA (04/01/86)
Hal, the current version of ZAS is 2.2, and the bug you reported has
been fixed (actually, the version is 2.2A). Note:
MITEK Relocating Macro Assembler vers 2.2 page 1
0000 19 add hl,de
M 0001 sub hl,de
0001 ED52 sbc hl,de
0003 D620 sub a,' '
0005 D620 sub ' '
Rick
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