is a microprocessor that was developed by Intel
. The 80186 was an improvement on the Intel 8086
and Intel 8088
. As with the 8086, it had a 16-bit
external bus and was also available as the Intel 80188
, with an 8-bit
external data bus
. The initial clock rate of the 80186 and 80188 was 6 MHz
. They were generally used as embedded processors. They were not used in many personal computers
, but there were some notable exceptions. One was the Mindset, a very advanced computer for the time. Another was the original Gateway Handbook
, a small subnotebook computer. A third was Compis
, a swedish school computer.
One major function of the 80186/80188 series was to reduce the number of chips required by including features such as a DMA controller, interrupt controller, timers, and chip select logic.
New instructions were introduced as follows:
ENTER Make stack frame for procedure parameters
LEAVE High-level procedure exit
PUSHA Push all general registers
POPA Pop all general registers
BOUND Check array index against bounds
IMUL Signed (integer) multiply
INS Input from port to string
OUTS Output string to port
See also List of Intel microprocessors
This article (or an earlier version of it) contains material from FOLDOC, used with permission.