58
All units ran much faster than the original TRS-80 , at 4 MHz , ( with a software selectable throttle to the original speed for compatibility purposes ) and the display supported upper and lower case , hardware snow suppression ( video ram bus arbitration logic ) , and an improved character font set .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None