How to Enable Math Coprocessor Instructions

ID Number: Q25259

5.10 5.10a 6.00 6.00a 6.00b

MS-DOS

Summary:

To enable 287 or 387 math coprocessor instructions, the type of the

processor must be specified. You can perform this process by

specifying the first entry in the program as one of the following

types:

.8086 for 8086 without 8087 math coprocessor

.8087 for 8086 with 8087 math coprocessor

.186 for 186 processor

.286 for 286 without math coprocessor without privileged

instructions

.286P for 286 without math coprocessor with privileged instructions

.287 for 286 with math coprocessor

.386 for 386 without math coprocessor without privileged

instructions

.386P for 386 without math coprocessor with privileged instructions

.387 for 386 with math coprocessor

.486 for 486 with math coprocessor (new with MASM 6.0)

.486P for 486 with math coprocessor with privileged instructions

(new with MASM 6.0)

.NO87 disables assembly of all coprocessor instructions