96:
instruction set with 12 new instructions useful in multimedia applications. The extensions were not enabled by default, requiring the BIOS or software to enable them. EMMI was never given much support from software developers or acknowledged by Cyrix's competitors (certain
61:
Today, these extended MMX instructions are notable as being the common subset of MMX extensions that work across both AMD Athlon and SSE-capable Intel processors.
193:
101:
36:
104:
instructions even share opcodes with EMMI instructions). It was never implemented in any processors after the
93:
40:
20:
163:
47:
microarchitecture. These instructions are commonly known as "Extended MMX instructions".
187:
54:
Processor, as part of the SSE instruction set. Next month, in late June 1999, AMD's
58:
processor was released which featured the extended MMX instructions, but not SSE.
51:
69:
Less commonly known, "Extended MMX" could also refer to the original Cyrix
55:
44:
43:. AMD incorporated this subset of extended MMX instructions into the
39:
were a number of new instructions that extended the functionality of
98:
78:
83:
24:
50:
These instructions debuted in May 1999, in the Intel
19:refers to one of two possible extensions to the
65:Cyrix EMMI (Extended Multi-Media Instructions)
8:
77:). This instruction set was developed by
154:
108:. The EMMI instruction set included:
7:
162:Wright, Christopher (January 2004).
92:line of processors. It extended the
14:
75:Extended Multi-Media Instructions
1:
210:
81:and implemented on their
37:Streaming SIMD Extensions
164:"AMD MMX Extensions"
35:Included in Intel's
21:MMX instruction set
168:AMD MMX Extensions
31:Intel Extended MMX
201:
194:X86 instructions
179:
178:
176:
174:
159:
209:
208:
204:
203:
202:
200:
199:
198:
184:
183:
182:
172:
170:
161:
160:
156:
152:
67:
33:
12:
11:
5:
207:
205:
197:
196:
186:
185:
181:
180:
153:
151:
148:
147:
146:
143:
140:
137:
134:
131:
128:
125:
122:
119:
116:
113:
66:
63:
32:
29:
13:
10:
9:
6:
4:
3:
2:
206:
195:
192:
191:
189:
169:
165:
158:
155:
149:
144:
141:
138:
135:
132:
129:
126:
123:
120:
117:
114:
111:
110:
109:
107:
103:
100:
95:
91:
87:
85:
80:
76:
72:
64:
62:
59:
57:
53:
48:
46:
42:
38:
30:
28:
26:
22:
18:
171:. Retrieved
167:
157:
105:
89:
82:
74:
70:
68:
60:
49:
34:
17:Extended MMX
16:
15:
52:Pentium III
150:References
188:Category
173:23 March
130:pmulhriw
121:pmachriw
145:psubsiw
142:pmvgezb
127:pmulhrw
118:pdistib
112:paddsiw
139:pmvlzb
136:pmvnzb
56:Athlon
45:Athlon
133:pmvzb
124:pmagw
115:paveb
99:Intel
79:Cyrix
175:2013
88:and
84:6x86
71:EMMI
23:for
106:MII
102:SSE
94:MMX
90:MII
41:MMX
25:x86
190::
166:.
86:MX
27:.
177:.
73:(
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.