Diamond Flower MIO-550 ser/par/fdd/hdd
======================================

- FCCID: E5YMIO-550
- 16bit ISA bus
- Has a Startech ST16C552 chip, which I think means 16550-compatible ports.


  .J1-JP1--J2 FDC----J3 GAME---J4COMB------------..--
  |.. :: :::::::::::  ::::::    ::::             ||
  |   1  1            1         1              .--|=
  1::       .----.                             |  ||  9pin male dsub
  |::       |MCCS|       1.   .----.           |  ||  COMA
  |::       |3201|        :   |16C |           `--|=
  |:: J5    `----´       JP2  |552 |           .--|=
  |:: IDE                     `----´           |  ||
  |::                                          |  ||  25pin female dsub
  |::                       19   JP4   1       |  ||  PRINTER
  |::                       20:::::::::2       |  ||
  |       25  JP3   1         15:::::::1       |  ||
  |       26::::::::2         16  JP5  2       `--|=
  `-------mmmmmmmmmmm--mmmmmmmmmmmmmmmmmmmmmm----´|
          """""""""""  """"""""""""""""""""""     |



J1: LED (hard disk indicator light)

JP1: 1-3: COMA DMA enable=closed, disable=open(default).
     2-4: COMB DMA enable=closed, disable=open(default).

JP2: Max baud rate. 1-2 = 56 kpbs (1.8432 MHz clock),
                    2-3 = 448 kbps (7.3728 MHz 8clock) (default)


(COM port adresses: COM1=3F8, COM2=2F8, COM3=3E8, COM4=2E8)

JP3.1: COM A = COM4
JP3.2: COM A = COM2
JP3.3: COM A = COM3
JP3.4: COM A = COM1  (default)
JP3.5: COM B = COM4
JP3.6: COM B = COM2  (default)
JP3.7: COM B = COM3
JP3.8: COM B = COM1
JP3.9: PRINTER = LPT2 (278)
JP3.10: PRINTER = LPT1 (378)  (default)
JP3.11: Game port. closed=enable, open=disable.
JP3.12: Floppy. closed=enable, open=disable.
JP3.13: IDE. closed=enable, open=disable.


JP4.1: COM A = IRQ 2
JP4.2: COM A = IRQ 5
JP4.3: COM A = IRQ 4  (default)
JP4.4: COM A = IRQ 3
JP4.5: COM B = IRQ 2
JP4.6: COM B = IRQ 5
JP4.7: COM B = IRQ 4
JP4.8: COM B = IRQ 3  (default)
JP4.9: PRINTER = IRQ 5
JP4.10: PRINTER = IRQ 7  (default)


JP5:
COM A receive  DMA1: 3-4, 7-8  (default)
COM A receive  DMA3: 2-4, 5-6
COM A transmit DMA1: 1-3, 7-8
COM A transmit DMA3: 1-2, 5-6
COM B receive  DMA1: 11-12, 15-16
COM B receive  DMA3: 10-12, 13-14  (default)
COM B transmit DMA1: 9-11, 15-16
COM B transmit DMA3: 9-10, 13-14



-- Tomas Andersson 1999-07-30