A92: 680xx instructions.

To: "assembly-92@lists.ticalc.org" <assembly-92@lists.ticalc.org>
Subject: A92: 680xx instructions.
From: Alejandro Paz - PSC SRL <psys@cotelco.com.ar>
Date: Sun, 16 Jan 2000 16:10:58 -0300
Reply-To: assembly-92@lists.ticalc.org


try another instruction because move ccr,d0 is a legal 68k instruction
even in user mode.
Try somethin like :

68020  : callm #1,(a0)          : #00000110 11010000 00000000 00000001 b
(05B0 0001)
68030/20  : pack D0,D1,#0 : #10000011 01000000 (8340)
CPU32 : tbls.w D1:D2,D0   : #11111000 00000001 00001000 01000010 b (F801
0842)

we know that the line 1111 causes a trap.

but the best will be the use of a new addressing mode : clr.w
#0(a0,d1.l*4)

will be :  #01000010 01110000 00011101 01010000 b (4270 1B50)

this instruction works in a cpu32, 020 and so on...

Pacito

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