Difference between revisions of "Ast I∕O Plus II"

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m (MFM -> ST-506)
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{{SuperIO Infobox
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{{Device Infobox/Begin
 
  | Bus type = ISA
 
  | Bus type = ISA
 
  | Bus width = 8-bit
 
  | Bus width = 8-bit
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  | 8-bit ISA compatible =
 
  | 8-bit ISA compatible =
 
  | Manufacturer = Ast Research
 
  | Manufacturer = Ast Research
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| Chipset = N/A
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  | Compatible with = [[Has compatibility::RS232]], [[Has compatibility::LPT]], [[Has compatibility::Gameport]], [[Has compatibility::Apple II Gameport]], [[Has compatibility::RTC]]
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  | Compatible with = [[Has compatibility::RS232]], [[Has compatibility::LPT]], [[Has compatibility::Gameport]], [[Has compatibility::RTC]]
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  | Connectors = [[Has connector::Gameport]], [[Has connector::LPT]] <!-- Other connectors aren't shipped with the card so aren't included -->
 
  | Connectors = [[Has connector::Gameport]], [[Has connector::LPT]] <!-- Other connectors aren't shipped with the card so aren't included -->
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  | ROM type = None
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  | Requires -5VDC = No
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| Requires -12VDC = Yes
 +
| Config = [[Config method::Jumpers]]
 +
}}
 +
{{Device Infobox/IO
 
  | Serial ports = 2
 
  | Serial ports = 2
 +
| UART = 8250 <!-- Based on IC model numbers -->
 +
| COM1 = Yes
 +
| COM2 = Yes
 +
| COM3 = No
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| COM4 = No
 
  | Parallel ports = 1
 
  | Parallel ports = 1
 +
| Bi-dir = No <!-- Assumption based on age -->
 +
| ECP = No
 +
| EPP = No
 +
| LPT1 = Yes
 +
| LPT2 = Yes
 +
| LPT3 = No
 +
| LPT4 = No
 
  | Game ports = 1
 
  | Game ports = 1
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| Floppy buses = 0
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}}
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| Secondary floppy = No
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{{Device Infobox/End
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| IDE buses = 0
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−
| ST-506 buses = 0
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−
| Requires -5VDC =
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−
| Requires -12VDC =
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| Config = [[Config method::Jumpers]]
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  | Driver = N/A
 
  | Driver = N/A
 
}}
 
}}

Latest revision as of 16:00, 13 February 2016

Ast I∕O Plus II
Ast I∕O Plus II.jpg
Bus type ISA
Bus width 8-bit
Bus speed 4.77 MHz
Manufacturer Ast Research
Chipset Unknown
Compatible with RS232, LPT, Gameport, Apple II Gameport, RTC
Connectors Gameport, LPT
Requires -5VDC? No
Requires -12VDC? Yes
Config method Jumpers
IO Controller
Serial ports 2
UART 8250
COM1/2/3/4? Yes / Yes / No / No
Parallel ports 1
Bi-dir? No
ECP? No
EPP? No
LPT1/2/3/4? Yes / Yes / No / No
Game ports 1
Driver N/A

The Ast Research I∕O Plus II is a serial/parallel/gameport board.

Socket U4 is optional, and can be populated with a compatible UART to provide a second serial port. In the main photo a Winbond W86C250B can be seen here. This is an equivalent part to the INS8250N-B providing the first serial port. Both these parts are 8250-compatible UARTs.

Additional photos

  • Underside

Related links

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