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RIO PLUS

STB SYSTEMS, INC.

RIO PLUS

Card Type

Memory/Multi-I/O

Maximum Onboard Memory

384KB DRAM

I/O Options

Apple ][ game port, clock/calendar, parallel port, SASI hard drive controller, serial port

Data Bus

8-bit ISA

Hard Drives Supported

Up to seven SASI drives

CONNECTIONS

Function

Label

Function

Label

Apple ][ game port

J1

Parallel or SASI port

J4

Unidentified

J2

Serial port

J5

1.5V AA battery connector

J3

   

USER CONFIGURABLE SETTINGS

Setting

Label

Position

»

Memory enabled

SW1/3

On

 

Memory disabled

SW1/3

Off

»

Parallel port address is 378h

SW1/6

Off

 

Parallel port address is 278h

SW1/6

On

»

Serial port address is 3F8h (COM1:)

SW1/7

Off

 

Serial port address is 2F8h (COM2:)

SW1/7

On

»

J4 is a parallel port

SW1/8

Off

 

J4 is a SASI port

SW1/8

On

DRAM

Size

Bank 0

Parity 0

Bank 1

Parity 1

Bank 2

Parity 2

64KB

(8) 64K x 1

(1) 64K x 1

NONE

NONE

NONE

NONE

128KB

(8) 64K x 1

(1) 64K x 1

(8) 64K x 1

(1) 64K x 1

NONE

NONE

192KB

(8) 64K x 1

(1) 64K x 1

(8) 64K x 1

(1) 64K x 1

(8) 64K x 1

(1) 64K x 1

256KB

(8) 64K x 1

(1) 64K x 1

(8) 64K x 1

(1) 64K x 1

(8) 64K x 1

(1) 64K x 1

320KB

(8) 64K x 1

(1) 64K x 1

(8) 64K x 1

(1) 64K x 1

(8) 64K x 1

(1) 64K x 1

384KB

(8) 64K x 1

(1) 64K x 1

(8) 64K x 1

(1) 64K x 1

(8) 64K x 1

(1) 64K x 1

DRAM (CON’T)

Size

Bank 3

Parity 3

Bank 4

Parity 4

Bank 5

Parity 5

64KB

NONE

NONE

NONE

NONE

NONE

NONE

128KB

NONE

NONE

NONE

NONE

NONE

NONE

192KB

NONE

NONE

NONE

NONE

NONE

NONE

256KB

(8) 64K x 1

(1) 64K x 1

NONE

NONE

NONE

NONE

320KB

(8) 64K x 1

(1) 64K x 1

(8) 64K x 1

(1) 64K x 1

NONE

NONE

384KB

(8) 64K x 1

(1) 64K x 1

(8) 64K x 1

(1) 64K x 1

(8) 64K x 1

(1) 64K x 1

Note:The information of which chips are the parity chips is unidentified.

MAINBOARD MEMORY

Size

SW1/1

SW1/2

64KB

On

On

128KB

On

Off

256KB

Off

On

320KB

Off

Off

SERIAL PORT INTERRUPT

Setting

SW1/4

SW1/5

IRQ3

Off

On

IRQ4

On

Off