Instructions Supported By MASM
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-

MASM supports only 54 x86 instruction which is leasted here:

AAA
AAD
AAM
AAS
CBW
CDQ
CLC
CLD
CLI
CLTS
CMC
CMPSB
CMPSW
CMPSD
CPUID
CWD
CWDE
DAA
DAS
HLT
INT3
INTO
INVD
LAHF
LEAVE
LOCK
LODSB
LODSW
LODSD
MOVSB
MOVSW
MOVSD
NOP
POPA
POPF
PUSHA
PUSHF
RDMSR
RET
RSM
SAHF
SCASB
SCASW
SCASD
STC
STD
STI
STOSB
STOSW
STOSD
WAIT
WBINVD
WRMSR
XLATB