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Line 136: * The MicroCore Labs [http://www.microcorelabs.com/mcl86.html MCL86] {{Webarchive\|url=https://web.archive.org/web/20161103224205/http://www.microcorelabs.com/mcl86.html \|date=2016-11-03 }} , [http://www.microcorelabs.com/mcl51.html MCL51] {{Webarchive\|url=https://web.archive.org/web/20170202042033/http://www.microcorelabs.com/mcl51.html \|date=2017-02-02 }} and [http://www.microcorelabs.com/mcl65.html MCL65] {{Webarchive\|url=https://web.archive.org/web/20181221000146/http://www.microcorelabs.com/mcl65.html \|date=2018-12-21 }} are examples of highly encoded "vertical" microsequencer implementations of the Intel 8086/8088, 8051, and MOS 6502. * The [http://www.bitsavers.org/pdf/digitalScientific/ Digital Scientific Corp.] Meta 4 Series 16 computer system was a user-microprogammable system first available in 1970. The microcode had a primarily vertical style with 32-bit microinstructions.<ref>{{cite book \|url=http://www.bitsavers.org/pdf/digitalScientific/7032MO_Meta4Series16RefMan.pdf \|title=Digital Scientific Meta 4 Series 16 Computer System Reference Manual \|id=7032MO \|publisher=Digital Scientific Corporation \|date=May 1971 \|access-date=2020-01-14 \|url-status=live \|archive-url=https://web.archive.org/web/20200114014526/http://www.bitsavers.org/pdf/digitalScientific/7032MO_Meta4Series16RefMan.pdf \|archive-date=2020-01-14}}</ref> The instructions were stored on replaceable program boards with a grid of bit positions. One (1) bits were represented by small metal squares that were sensed by amplifiers, zero (0) bits by the absence of the squares.<ref>{{cite book \|url=http://www.bitsavers.org/pdf/digitalScientific/7024MO_ROMmanual_Mar70.pdf\|title=Digital Scientific Meta 4 Computer System Read-Only Memory (ROM) Reference Manual \|id=7024MO \|publisher=Digital Scientific Corporation \|date=March 1970 \|access-date=2020-01-14 \|url-status=live \|archive-url=https://web.archive.org/web/20190923061816/http://bitsavers.org/pdf/digitalScientific/7024MO_ROMmanual_Mar70.pdf \|archive-date=2019-09-23}}</ref> The system could be configured with up to 4K 16-bit words of microstore. One of Digital Scientific's products was an emulator for the [[IBM 1130]].<ref>{{cite book \|url=http://www.bitsavers.org/pdf/digitalScientific/7006MO_Meta16_SysMan_Jun70.pdf \|title=The Digital Scientific Meta 4 Series 16 Computer System Preliminary System Manual \|id=7006MO \|publisher=Digital Scientific Corporation \|date=June 1970 \|access-date=2020-01-14 \|url-status=live \|archive-url=https://web.archive.org/web/20190923061755/http://bitsavers.org/pdf/digitalScientific/7006MO_Meta16_SysMan_Jun70.pdf \|archive-date=2019-09-23}}</ref><ref>{{cite book \|url=http://www.bitsavers.org/pdf/digitalScientific/M4-005P-170_1130rom_Jan70.pdf \|title=Digital Scientific Meta 4 Computer System Typical ROM Pattern Listing and Program To Simulate The IBM 1130 Instruction Set \|id=M4/005P-170 \|publisher=Digital Scientific Corporation \|date=January 1970 \|access-date=2020-01-14 \|url-status=live \|archive-url=https://web.archive.org/web/20200324115023/http://bitsavers.org/pdf/digitalScientific/M4-005P-170_1130rom_Jan70.pdf \|archive-date=2020-03-24}}</ref> * The [[MCP-1600]] is a [[microprocessor]] made by [[Western Digital]] ~~in the late~~from ~~1970s~~1975 through the early 1980s. It was used to implement three different computer architectures in microcode: the [[Pascal MicroEngine]], the [[~~Western Digital WD16\|~~WD16]], and the [[Digital Equipment Corporation\|DEC]] [[PDP-11#LSI-11\|LSI-11]], a cost-reduced PDP-11.<ref>{{cite web \|url=http://www.antiquetech.com/?page_id=782 \|title=Western Digital 1600 \|publisher=AntiqueTech \|access-date=5 January 2017 \|url-status=dead \|archive-url=https://web.archive.org/web/20170103021205/http://www.antiquetech.com/?page_id=782 \|archive-date=3 January 2017}}</ref> * Earlier [[x86]] processors are fully microcoded; starting with the [[Intel 80486]], less complicated instructions are implemented directly in hardware. x86 processors implemented [[patchable microcode]] (patch by [[BIOS]] or [[operating system]]) since [[P6 (microarchitecture)\|Intel P6 microarchitecture]] and [[Athlon\|AMD K7 microarchitecture]]. * Some [[video card]]s, [[wireless network interface controller]]s implemented patchable microcode (patch by operating system).

Microcode: Difference between revisions