Description: The card was designed to be IEEE 696 compatible. The card was sold as a kit. It have an onboard ROM allowing a monitor boot directly from the board. It also had on board complete circuitry for an AMD 9519 interrupt controller. The Intersystems Series II Z-80 board was one of the first S-100 processor boards to take full advantage of the IEEE specification,. It has many special features that made it both powerful and easy to use. Among these features were:- A simple address management system that provided two 1 Kilobyte segments reloadable anywhere in the first megabyte of the 16 megabytes of the S-100 address apace. Four light-emitting-diodes Indicate the four most-significant address bits. A Vectored Interrupt Controller that provided sophisticated, high speed interrupt handling with individual masking, fixed or rotating priorities, and optional polled operation. 2 or 4 MHz processor speed which was on-board pin-jumper selectable. PROM monitor socket will accept 2708, 2716, 2759, or 2732 EPROM's and a reset jump is provided to the PROM. The PROM may be addressed at any 1 K boundary in the 64 K address space. On-board wait generator optionally adds a single wait state to any Instruction Fetch, Memory Reference, Input/Output Reference, or on-board PROM Reference. On-board circuit conducts the IEEE specified nested bus transfer for glitch-free DMA operations, and DMA controllers need not duplicate the circuit. Special engineering features included 2 self-test modes for quick circuit debugging and Address and Status latching to reduce bus noise and improve reliability.
Price: 119.39 USD
Location: Grand Portage, Minnesota
End Time: 2025-02-03T07:12:13.000Z
Shipping Cost: N/A USD
Product Images
Item Specifics
All returns accepted: ReturnsNotAccepted
Compatible Brand: Altair
Type: S-100 Board
Country/Region of Manufacture: United States
Vintage: Yes
