Lab # 7: Intel 80286 'AT'

Part one

Model Number: DC3010E Power Supply: 200 Watts

Motherboard:

- Number of Pins on CPU: 68

- New Features of CPU::

• Still 16-bit
• The big difference from the earlier 8086 chip is its support of multitasking. Several tasks can be performed 'simultaneously' by dividing CPU time among them
• There are more instructions (opcodes) available on the 80286 than on the 8088
• There are still 14 sixteen-bit registers, just like on the 8088. However,

 the 80286 in 'protected mode' can address memory in such a way that it
 can multitask.

- Types of buses, widths from where to where.

- Expansion slots, Width

• These are ISA 16-bit, with 49 lines:
• Each slot has 31 lines for the old 8-bit slot, plus + 18 lines to make it a 16-bit slot.

• Type: Intel Phoenix
• Programmable?: NO
• Jumpers?: no jumpers

• Maker: Daewoo
• Programmable?: NO
• Jumpers?: no jumpers

• Size: 1.5M, including 896K of extended memory (EMS)
• Type: Dynamic
• Configuration: 6 possible banks. Four of them are filled.

• Model: VGA Wonder 16
• Brand: ATI
• Three 'COM' serial ports
• Two Centronics parallel ports

• Size: 40M

Part Two

• Cylinders - 61
• Heads - 4
• Sectors -12
• Brand - Miniscribe

Part Three

• To determine if it was 8086, 80286 or 80386, we had to examine the CPU chip inside the case.
• There is no CD drive, but there is a 3.5 inch floppy drive.
• I thought everything would be old-fashioned but 1.44M floppy drive and serial and parallel port don't look any different from current ones. (The technology for these has not changed much Only now are we beginning to move to Universal Serial Bus ports and replacements for the floppy such as the LS-120!)
• We couldn't tell which bus was control bus.