Radio Shack EC-293 Technical Information Page 28
- Page / 42
- Table of contents
- BOOKMARKS
- = 1024 memory locations 2
- Contents 3
- Installing the Power Supplies 4
- /~7" 5
- Connection to the TRS-80 7
- Power-Up and Notes 9
- Notes on AC Power Sources 10
- SETTING UP 10
- PERIPHERALS 12
- Dual Cassettes 13
- Dual Cassette Operation 14
- Line Printer 15
- Mini Disk(s) 17
- Bus Compatible Devices 17
- Expansion Board 17
- Expansion Board Installation 18
- TECHNICAL 20
- INFORMATION 20
- 25 mS Heartbeat Interrupt 21
- = USR(O) 22
- TECHNICAL INFORMATION 23
- Floppy Disk Controller IC 25
- Address Decoding Scheme 26
- '~' 27
- I I Pulse Low 28
- I Pulse Low 28
- Mini Disk Card-Edge Signals 30
- Bus Card-Edge Signals 31
- ::::::::::::: 33
- Schematic Diagrams 34
- "O.n 35
- "' 36
- 't[tw 37
- ."'} 38
- ~5fJ,l.l 40
- - -------c=rEJ 41
- WARRANTY 42
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