The IA2910A is a form, fit and function compatible part to the AMD 2910A microprogram controller. The IA2910A is an address controller which will sequence through a series of microinstructions contained in a ROM or PROM. There are four sources of addresses from which the IA2910A may select. The first is a direct data bus (DIN) input, which is straightforward. The second is an internal address register. This register contains data loaded during a previous microinstruction.

FEATURES

• Form, Fit, and Function Compatible with the AMD™ Am2910A

• Packaging options available: 40 Pin Plastic or Ceramic DIP, 44 Pin Plastic Leaded Chip Carrier

• Twelve Bits Wide

• Internal Loop Counter

• Four Address Sources

- push/pop stack counter

- internal holding register

- microprogram counter

- branch address bus

• 9 Word Deep Stack Register

- push/pop control for nesting subroutines

• 16 Sequence Control Microinstructions

• Output Enable controls 3 Branch Address Sources