MCM-6117 STD Bus CPU

WinSystems today introduced the MCM-6117, the second of three new, high-integration STD Bus CPUs. The MCM-6117 is an entry-level product based upon a 386sx-compatible processor that combines the features of 3 other STD Bus cards into one. The onboard I/O complement includes 4 serial COM channels, 48 digital I/O lines, PC/104 and STD Bus expansion as well as the standard AT-peripherals of a keyboard controller, real-time clock, line printer port, plus IDE and floppy disk controllers. It can replace both 386SX and V53-based STD Bus SBCs from WinSystems (MCM-SBC53) plus Ziatech's V53/V40 (ZT8901, ZT8801, & ZT8802) and the Pro-Log's 7871.

In addition to the ALi 6117-33 CPU, the board integrates the basic AT peripheral complement including the keyboard controller, 16-channel interrupt controller, and real-time clock. Onboard peripherals are mapped in the same location as a PC-AT including seven DMA controllers, three 16-bit counter/timers, two interrupt controllers, keyboard controller, and speaker port. Four independent serial COM channels all with RS-232 interface levels and two with optional RS-422/485 levels, parallel line printer (LPT) interface, floppy disk controller, EIDE hard disk interface and mouse port are also provided. A STD Bus and PC/104 connector supports a wide variety of system I/O expansion options using add-on boards.

A versatile 48-line TTL-compatible digital I/O controller is onboard that is programmable for each line providing input, output or output with readback. The major feature of this controller is its ability to monitor 24 of the lines for both rising and falling digital edge transitions, latch them and then interrupt the processor of a change of state status. This is important for use with real-time systems and reduces CPU overhead.

An onboard 32-pin socket supports up to a 288 Mbyte M-Systems (Fremont, CA) DiskOnChip® Flash memory device for use as a solid state disk (SSD). This SSD solution is a viable alternative for fragile floppy and hard disk drives in harsh environmental applications.
The MCM-6117-2M requires only +5 volts to operate and draws less approximately 750mA (3.75 Watts) with 2Mbytes of system memory.

The MCM-6117's operating temperature range is from 0 to +60° Celsius. A CMOS STD Bus version of this board called the LPM-6117 is available with an operational temperature range of -40° to +85° Celsius for extended temperature applications.

WinSystems, Inc., 715 Stadium Drive, Arlington, TX 76011. Tel: 817-274-7553; Fax: 817-548-1358.