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Difference between revisions of "national semiconductor/imp-4"
Line 10: | Line 10: | ||
| release = March, 1973 | | release = March, 1973 | ||
| arch = 4-bit bit-slice | | arch = 4-bit bit-slice | ||
− | | word = 4 | + | | word = 4 bit |
| proc = 10 μm | | proc = 10 μm | ||
| tech = pMOS | | tech = pMOS |
Latest revision as of 23:32, 18 May 2016
The National IMP-4 (originally National GPC/P) was a family of multi-chip 4-bit bit-slice microprocessor developed by National Semiconductor and introduced in 1973. Units could be combined to implement systems with 4 to 32-bit words. The IMP-8 and IMP-16 families were made using the IMP-4 logic. The IMP-4 had 2 chips: a control unit and an ALU, some systems used the RALU with custom control circuitry. The RALU was the first bit-slice microprocessor - predating both the 3000 and the am2900.
2nd sources[edit]
Rockwel was the only 2nd source for the IMP-4 series. Some USSR clones are known to exist.
Design[edit]
This section is empty; you can help add the missing info by editing this page. |
Members[edit]
Family Members | ||
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Part (Commercial) |
Part (Military) |
Description |
IMP-4A/520 | IMP-4A/420 | Bundled Kit, CROM + RALU |
IMP-4A/521 | IMP-4A/421 | Control and Read-only Memory (CROM) |
IMP-00A/520 | IMP-00A/420 | Register and Arithmetic Logic Unit (RALU) |
This article is still a stub and needs your attention. You can help improve this article by editing this page and adding the missing information. |
Facts about "IMP-4 - National Semiconductor"
designer | National Semiconductor + |
full page name | national semiconductor/imp-4 + |
instance of | integrated circuit family + |
main designer | National Semiconductor + |
manufacturer | National Semiconductor + |
name | National IMP-4 + |
package | DIP24 + |
process | 10,000 nm (10 μm, 0.01 mm) + |
technology | pMOS + |
word size | 4 bit (0.5 octets, 1 nibbles) + |