Companies will soon be queuing for the wherewithal to build 80486-based personal computers, and Headland Technology Inc up in Fremont, California reckons that its HIT 486 is the first available building block chip set for creating 80486 AT-alikes: the four-chip set runs at 25MHz or 33MHz and consists of a peripheral controller, the GC131, the GC132 CPU and memory controller, the GC133 bus interface bridge chip and the GC135 80486 CPU interface chip; it needs a microprocessor keyboard controller, real-time clock, memory and six external TTL devices to do an 80486 box and supports up to 24Mb of memory, shadow RAM for system and video BIOS, as well as 128Kb or 64Kb of EPROM space; the chip set sells for $110 in volume, and is available now.
