commodore 128d

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(click on picture)

 

Introduced January 198
Discontinued  
Release Price  

 

System Architecture

   

Memory

 
Microprocessor 7510 / Z80A   Standard on system board 128k
Clock speed 2 MHz / 2.9 MHz   Maximum on system board 128k
Bus type CBM proprietary   Maximum total memory 512k
Data bus width     Memory speed and type  
Adress bus width 8 bit   System board memory socket type  
Interrupt levels N/A   Number of memory module sockets  
DMA channels N/A   Memory used on system board dynamic

Standard Features

   

Disk Storage

 
ROM size     Internal disk and tape drive bays 1 - half height 5.25
Optional math coprocessor no   Standard floppy drives 1
Parallel port type     Optional floppy drives: up to 8
RS232C serial ports yes   * 5 1/4 inch 160k single sided yes
Mouse ports yes   * 5 1/4 inch 360k double sided yes
UART chip used N/A   * 3 1/2 inch 800k yes
Maximum speed N/A   * 3 1/2 inch 1.44MB no
CMOS real time clock no   * 3 1/2 inch 2.88MB no
CMOS RAM no   Hard disk controller included no

Video & Graphics

   

Sound

 
Graphics Processor VIC II 6567   Sound Interface device SID 6581
Screen size - Col x Rows 40/80 x 25   Sound generation 3 voices
Resolution - Colors/High 16/320 x 200   ADSR capable yes
Resolution - Colors/Low        
Max colors 16   Programming language  
Sprites or Missiles 8- 21 x 24 pixels   Built in language CBM Microsoft BASIC 2.0/7.0
      Built in M L monitor yes

Expansion Slots

   

Keyboard Specs.

 
Total adapter slots 1   Number of keys 92
Number of 8/16/32 bit slots 1/0/0   Upper/lower case yes/yes
      Keyboard cable length 4 foot

Physical Specs.

   

Environmental Specs.

 
* Height     Operating voltage @ 60 Hz 105-125 VAC
* Width     Maximum power supplied  
* Depth     Power supply output - volts  
* Weight     Power supply output - amps