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MAESTRO

TECMAR

MAESTRO

Card Type

Multi-I/O

Chipset

Unidentified

Maximum Onboard Memory

2.5MB DRAM

I/O Options

Parallel port, serial port

Data Bus

8-bit ISA

CONNECTIONS

Function

Label

Function

Label

Serial port

CN1

Parallel port

CN2

Note:A DB-25 connector for the serial port attaches to the board via a 26-pin header. The location of this header is unidentified.

USER CONFIGURABLE SETTINGS

Setting

Label

Position

Factory configured - do not alter

JPR

Unidentified

PARALLEL PORT ADDRESS

Setting

SW1/4

SW1/5

LPT1:

Off

On

LPT2:

On

Off

Disabled

On

On

SERIAL PORT ADDRESS AND INTERRUPT

Address

IRQ

JPR6/A

JPR6/B

JPR6/C

SW1/6

SW1/7

3F8h (COM1:)

4

Open

Closed

Open

Off

Off

2F8h (COM2:)

3

Closed

Open

Open

On

Off

3E8h (COM3:)

4

Open

Open

Closed

On

On

2E8h (COM4:)

3

Open

Open

Closed

Off

On

Note:Both the 9-pin and 25-pin connectors access the same serial port.

SERIAL PORT CONFIGURATION

Setting

JPR4

DTE

Pins 1 & 2, 3 & 4, 6 & 7, 8 & 9, 11 & 12, 13 & 14 closed

DCE

Pins 2 & 3, 4 & 5, 7 & 8, 9 & 10, 12 & 13, 14 & 15 closed

DRAM (256KB ON MAINBOARD)

Size

Bank 0

Bank 1

Bank 2

Bank 3

Bank 4

0KB

None

None

None

None

None

128KB

None

(18) 64K x 1

None

None

None

256KB

None

(18) 64K x 1

(18) 64K x 1

None

None

384KB

(18) 64K x 1

(18) 64K x 1

(18) 64K x 1

None

None

512KB

(18) 64K x 1

(18) 64K x 1

(18) 64K x 1

(18) 64K x 1

None

640KB

(18) 64K x 1

(18) 64K x 1

(18) 64K x 1

(18) 64K x 1

(18) 64K x 1

896KB

(18) 64K x 1

(18) 64K x 1

(18) 64K x 1

(18) 256K x 1

None

1408KB

(18) 64K x 1

(18) 64K x 1

(18) 64K x 1

(18) 256K x 1

(18) 256K x 1

DRAM SWITCHES (256KB ON MAINBOARD)

Size

SW1/1

SW1/2

SW1/3

0KB

Off

On

On

128KB

Off

On

Off

256KB

Off

On

Off

384KB

Off

On

Off

512KB

Off

On

Off

640KB

Off

On

Off

896KB

Off

Off

Off

1408KB

Off

Off

Off

DRAM (512KB ON MAINBOARD)

Size

Bank 0

Bank 1

Bank 2

Bank 3

Bank 4

0KB

None

None

None

None

None

128KB

(18) 64K x 1

None

None

None

None

256KB

(18) 64K x 1

(18) 64K x 1

None

None

None

384KB

(18) 64K x 1

(18) 64K x 1

(18) 64K x 1

None

None

512KB

(18) 64K x 1

(18) 64K x 1

(18) 64K x 1

(18) 64K x 1

None

640KB 1

(18) 64K x 1

(18) 64K x 1

(18) 64K x 1

(18) 64K x 1

(18) 64K x 1

640KB 2

(18) 64K x 1

(18) 256K x 1

None

None

None

1152KB

(18) 64K x 1

(18) 256K x 1

(18) 256K x 1

None

None

1664KB

(18) 64K x 1

(18) 256K x 1

(18) 256K x 1

(18) 256K x 1

None

2176KB

(18) 64K x 1

(18) 256K x 1

(18) 256K x 1

(18) 256K x 1

(18) 256K x 1

DRAM SWITCHES (512KB ON MAINBOARD)

Size

SW1/1

SW1/2

SW1/3

0KB

Off

On

On

128KB

On

On

Off

256KB

On

On

Off

384KB

On

On

Off

512KB

On

On

Off

640KB 1

On

On

Off

640KB 2

On

Off

Off

1152KB

On

Off

Off

1664KB

On

Off

Off

2176KB

On

Off

Off

DRAM (640KB ON MAINBOARD)

Size

Bank 0

Bank 1

Bank 2

Bank 3

Bank 4

0KB

None

None

None

None

None

128KB

(18) 64K x 1

None

None

None

None

256KB

(18) 64K x 1

(18) 64K x 1

None

None

None

384KB

(18) 64K x 1

(18) 64K x 1

(18) 64K x 1

None

None

512KB 1

(18) 64K x 1

(18) 64K x 1

(18) 64K x 1

(18) 64K x 1

None

512KB 2

None

(18) 256K x 1

None

None

None

1MB 1

(18) 64K x 1

(18) 64K x 1

(18) 64K x 1

(18) 64K x 1

(18) 256K x 1

1MB 2

None

(18) 256K x 1

(18) 256K x 1

None

None

1.5MB

None

(18) 256K x 1

(18) 256K x 1

(18) 256K x 1

None

2MB

None

(18) 256K x 1

(18) 256K x 1

(18) 256K x 1

(18) 256K x 1

2.5MB

(18) 256K x 1

(18) 256K x 1

(18) 256K x 1

(18) 256K x 1

(18) 256K x 1

DRAM SWITCHES (640KB ON MAINBOARD)

Size

SW1/1

SW1/2

SW1/3

0KB

Off

On

On

128KB

Off

Off

On

256KB

Off

Off

On

384KB

Off

Off

On

512KB 1

Off

Off

On

512KB 2

On

Off

On

1MB 1

Off

Off

On

1MB 2

On

Off

On

1.5MB

On

Off

On

2MB

On

Off

On

2.5MB

On

Off

On