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SUBJECT: ENGINEERING CHANGE NOTICE # 9.
PRODUCT: DOUBLE D DISK CONTROLLER.
REVISION: BAND C REVISION BOARDS.
DATE: OCTOBER 6. 1980.
THE FOLLOWING JUMPER CONFIGURATION CAN BE USED WITH THE
SHUGART SA800/801 MODEL DISK DRIVE.
EACH DRIVE: A, B, C, Y, T2, HL, 800
DRIVE A: DSI
DRIVE B: DS2
DRIVE C: DS3
DRIVE D: DS4
LAST DRIVE: Tl, T3, T4, T5, T6
THE L JUMPER IS SET DEPENDING ON THE -5V SUPPLY.
CONSULT YOU SA800 MANUAL. USE NO OTHER JUMP PLUGS
IN THIS CONFIGURATION.
SIEMENS DISK DRIVE MODELS FD120-8B AND THE NEWER FD100-8D CAN
BE USED THE JADE DOUBLE D. EACH DRIVE MUST HAVE THE RADIAL
SELECT OPTION PLUG SET TO THE PROPER DRIVE NUMBER" 0 SELECTS
DRIVE A, 1 SELECTS DRIVE B, 2 SELECTS DRIVE C, AND 3 SELECTS
DRIVE D. ONLY THE LAST DRIVE ON THE RIBBON SHOULD CONTAIN THE
RESISTOR PACK. BE SURE TO REVIEW ECN #5. NO OTHER CHANGES ARE
NEEDED.
THE FOLLOWING PAGE DESCRIBES A TESTED JUMPER CONFIGURATION
FOR THE SHUGART SA850/851 WHEN USED WITH JADE RELEASE # 2 OF
CP/M 2.2.
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