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                                                     TRS-80 Model 100 Page
                                                               
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 This is on overview and specs on the TRS-80 Model 100 portable computer.
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   Radio Shack's TRS-80 Model 100 is a portable computer equipped with built-n software to perform a variety of useful
   tasks such as text preparation, schedule and address organizing, and telecommunications.
   
 Additionally, Model 100 has the following standard features:
 
   * Enhanced version of Microsoft BASIC
   * Full-size typewriter style keyboard
   * LCD with seven lines by 40 columns
   * Built-in modem
   * Built-in cassette interface
   * Built-in bar code reader interface
   * Parallel printer interface
     
 Other features available are: real time clock and calendar, upper and lowercase characters, and RAM internally expandable
 to 32K bytes.
 

Specifications

 Main Components
 
Keyboard

   * 27
     Number keys 10
     Picture- control keys 7
     Function keys 8
     Special symbol keys 8
     Mode keys 5
     Other special- use keys 6
     
LCD display

 Display panel
 240 x 64 Full- Dot matrix
 1/32 duty
 1/6.66 bias
 
 pot pitch
 0.8 x 0.8 mm
 
 Dot size
 0.73 x 0.73 mm
 
 Effective display area
 191.2 x 50.4 mm
 
Operation batteries

 Batteries
 Four AA alkaline- manganese batteries
 
 Operation time
 5 days (at 4 hours/day)
 \20 days (at I hour/day)
 Note: I/O is disconnected.
 
Memory protection battery (on Main PCB)

 Battery
 Rechargeable
 
 Protection time
 About 40 days (8 KB)
 About 10 days (32 KB)
 
 Recharge method
 Trickle charge by AC adaptor, or operation batteries
 
LSls

 CPU
 80C85
 Code and pin compatible with 8085
 
 ROM
 Max. 64 KB (2 banks of 32 KB)
 Standard 32 KB
 Option 32 KB
 
 RAM
 Max. 32 KB
 Standard 8 KB RAM pack
 Incremental 8 KB RAM pack on PCB
 
  Clock Calendar
  
 aPD1990AC
 No leap year/no February 29
 

I/O Interface

 RS- 232C (conforms to EIA Standard)
 
 Signal
 TXR (Transmit Data)
 RXR (Receive Data)
 RTS (Request to Send)
 CTS (Clear to Send)
 DSR (Data Set Ready)
 DTR (Data Terminal Ready)
 
  Communications protocol
  
 Word length
 6, 7, or 8 bits
 
 Parity
 NON, EVEN, or ODD
 
 Stop Bit length
 1 or 2 bits
 
 Baud rate
 75, 110, 300, 600, 1200, 2400,4800, 9600, 19200 BPS
 
 Max. transmission distance 5m
 
 Driver max. voltage output +- 5V
 
 Driver min. voltage output +- 3.5V
 
 Receiver max. voltage input +- 18V
 
 Receiver min. voltage input +- 3V
 
 Modemlcoupler (conforms to BEL103 standards)
 
 Baud rate 300 BPS
 
 Programmable items:
 
 Data length 6, 7, or 8 bits
 
 Parity NON, EVEN, or ODD
 
 Stop bit I or 2 bits
 
 Full duplex Answer/call switchable mode
 
 Other functions Hang- up and auto- dialer
 
 Audio cassette interface
 
 Data rate 1500 BPS (MARK: 2400 Hz, SPACE: 1200 Hz)
 
 Printer interface (conforms to Centronics interface standards)
 
 Handshake signal STROBE, BUSY, BUSY
 
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                                                     M100 | M200 | M102
                                                              
 Last Modfied: 3/96
 Init: 1/5/96
 Created by: Andy Diller