Talk:Microprocessor/Archive 2

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TMS 1000 vs TMS 0100

The TMS 1000 section is a muddle because it gets the 0100 and the 1000 mixed up. The TMS 0100 series was introduced in 1971. The TMS 1000 series is entirely different, and came out in 1974, so it was not the first anything. The TMS 1802 was renamed the TMS 0102; it is a member of the TMS 0100 series and is unrelated to the TMS 1000 (despite the original numbering). KenShirriff (talk) 05:43, 17 March 2015 (UTC)

Years later - how do you like what's now at Texas Instruments TMS1000? It's a start, anyway. --Wtshymanski (talk) 23:44, 6 November 2017 (UTC)

Intel 80186 and IBM PC-style computers

The article states that no IBM PC style computers were made using the Intel 80186 processor. The Tandy 2000 computer used an 80186 processor.

https://en.wikipedia.org/wiki/Tandy_2000

These computers sold poorly, so many Radio Shack stores (mine included) used them as back-office computers, where we would manually enter the day's tickets into the computer, and connect via modem to headquarters.

AaronD12 (talk) 20:53, 28 November 2016 (UTC)

I was going to change this to say something about 80188 and 80186 were "rarely" used in desktop designs, but that's not what that sentence was saying - it was saying that Intel's original parts weren't used, but second-sourced parts were. This is a bizarre statement and I can't think of any reason why a manufacturer would specifically exclude Intel's parts. Now it becomes a question "Did Tandy use an Intel-made 801816 or an NEC 80186?" I recall reading that it was hard to build an MS-DOS compatible with an 80188/80186 because the internal peripherals wee mapped differently than on an IBM 5150 motherboard, but I can't recall where I saw this. --Wtshymanski (talk) 18:54, 17 September 2017 (UTC)

This is a rather interesting point. It is true that Intel never intended the 80186 or 80188 as the central processor chip in any form of PC and as such they were never used (the intended market was micro-controllers). However, having said that, NEC produced apparently second source parts for the 8086 and 8088 in the form of the V30 and the V20 (for the 8086 and 8088 respectively). In reality, the core of the NEC parts were clones of the 80186 and 80188 respectively. As far as I am aware, no one actually produced 80186 code for any PC compatible machine, though Microsoft's MASM and Borland's TASM were perfectly capable of doing so (once you had declared the '.186' assembler directive). I know that Amstrad and I believe that Tandy and a few other manufacturers used the NEC chips in their machines.

Any machine that used NEC's chips benefited from an execution speed increase because the V30 and V20 both used a hardware multiplier in their design, whereas the the Intel 8086, 8088, 80186 and 80188 all had to perform multiplication in microcode. The NEC parts, like the Intel 8018x parts, worked with the 8087 coprocessors. The V30 (but not the V20) would also work with the 80187, but 8086/7 assembled code would not have used the 80387 instructions (as the 80187 used an 80387 core). 85.255.234.206 (talk) 16:27, 7 November 2017 (UTC)

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