Vector Graphic 8K Static RAM
The 8K Static Memory board is designed to be plug-in compatible with your Vector 1, Altair, Imsai and Poly 88 systems. We have provided a high quality product by using the finest available memory chips and aerospace quality printed circuit board. The memory operates at the maximum speed of 8080A MPU or Z-80 MPU capacity with no wait states required. The memory chip address inputs are buffered to reduce capacitance loading on the address bus, a major plus since this could exceed 2000 pf in a large system. Address selection is my means od a DIP switch located on the upper edge of the board. With this feature you may change the board address for programs that run in high memory without having to remove the board from the computer. Another convenience is the output disable feature which permits start up of the computer without the front panel switches. Further, the board can be write protected. Typical power consumption of the 250 NS board is 1.6 amps using Fairchild 2102LHPC chips.