SC90 and SC91 Detailed Board Specifications

SC90/SC91 Software Development Systems

SC90 board: Cpu: Zilog Z86C90 operating at 12.288 Mhz.
SC91 board: Cpu: Zilog Z86C91 operating at 16. Mhz.
Memory mapping:
- Program memory: 0000h - 7FFFh: Eprom
- Program memory: 8000h - FFFFh: Static ram
- Data memory: 0000h - 7FFFh: Static ram
- Data memory: 8000h - FFFFh: Static ram
All IC's are socketed.
Board size: 4 by 6 inches (really 6 by 10 cm Eurocard).
Power: 9 Volts AC or DC; wall transformer supplied.
External host interface: serial RS-232 with DE-9 connector.
I/O Ports 2 & 3:
- Port lines brought out to header pins.
- Uart I/O and data memory select lines are controlled with jumpers.
All cpu control signals are brought out to a 28-pin header.
On-board status indicators:
- +5 volts.
- Reset line.
- Serial receive activity.
- Serial transmit activity.
Five buffer amplifiers are available for breadboarding.
Breadboarding area: approximately 3 by 9 cm with a plated hole pattern that accommodates a 96-pin DIN connector.
An auxiliary 4 * 9 cm solderless breadboarding strip is included on the mounting plate.
Software: This board includes a monitor in eprom that has an extensive internal library of register, program and data memory management commands, program execution commands, a software uart with Control-S, Control-Q flow control, a comprehensive mnemonic disassembler and a built-in library of 60+ monitor services.
Full source code of the monitor, an interface library (with source code) to a C compiler, and an introductory demonstration program is supplied.

Regrets, this item is no longer for sale. The following announcement is left for information purposes only.

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