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JM005A IDE DOM and Floppy Mezzanine Board [v1.0] for SC126 V1.0

1 year ago 255
  • Description
  • Documents
  • BOM
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Description

Create a stackable disk io daughterboard for SC126 - Mechanically Compatible with JM002 stacked on the SC126 v1.0 Brings out the IDE-44 pin connector. Also provides an additional RC80 bus header connector and Floppy connector. Most IDE DOM modules will NOT work with the IDE-44 pin connector due to mirroring of pins on DOM.

IDE_44_pin_pinouts.gif

Development Status Tracker

  • 09/13/2020 UNDER DEVELOPMENT
  • 09/13/2020 ROUTING COMPLETE
  • 09/13/2020 NETS CHECKED
  • 09/13/2020 SILK LAYERS CHECKED
  • 09/13/2020 READY FOR ORDER 1ST PROTOTYPES
  • 09/19/2020 BOARD received. TESTED OK, Requires IDE Cable + DOM

NOTE: Some DOMs have the connector on one side or the other (not only the end) and this determines the mechanical limitations for installation.

COMMENTS: This board (for many DOMs) requires the DOM to be at the end of a cable to lay flat. Many DOMs have incorrectly marked the pins or no marking are found at all. This is frustrating as the real orientation may not be known until the DOM is physically tested against a known pinout.

See also the alternate IDE 44 connector orientation: "JM005B IDE DOM and Floppy Mezzanine Board [v1.0] for SC126 V1.0"

DOM1.jpg

DOM2.jpg

Documents

JM005A SC126 v1.0 Z180 Disk IO Daughterboard V1.0

JM005A SC126 v1.0 Z180 Disk IO Daughterboard2 V1.0

JM005A SC126 v1.0 Z180 Disk IO Daughterboard V1.0

BOM

ID Name Designator Footprint Quantity
1 16.0000 MHz X1 OSC-08 1
2 FLOPPY_IDC_34P P4 Z-231011034106 1
3 4.7K RP2 RPACK-SIP-PTH-8 1
4 10K RP1 RPACK-SIP-PTH-8 1
5 3MM LED LED1 LED2-2.54-D5.0MM 1
6 74HCT138 U2,U1 PDIP-16 2
7 IDE 44 2X22 2MM S3 IDE 44 2X22 2MM 1
8 74HCT04 U6 DIP14 1
9 100nF C3,C4,C2,C5,C1,C6,C7,C8 CAP-RAD-2.54MM 8
10 WD37C65 U3 DIP-40_L52.3-W13.9-P2.54-LS15.2-BL 1
11 Jumper_Dual JP7,JP3,JP2,JP1,JP8,JP4 HDR-3X1/2.54 6
12 Extra RC80 Card Socket S1 RC2014-HDR-2X40-S-F-R-2.54MM 1
13 RC80 Card Socket S2 RC2014-HDR-2X40-S-F-R-2.54MM 1
14 74HCT688 U5 DIP20 1
15 10K R3,R2,R4 RES-TH_BD1.8-L3.2-P7.20-D0.4 3
16 470 R1 RES-TH_BD1.8-L3.2-P7.20-D0.4 1
17 4.7K R6,R5 RES-TH_BD1.8-L3.2-P7.20-D0.4 2
18 Header-Male-2.54_2x6 P1 HDR-TH_12P-P2.54-V-R2-C6-S2.54 1
19 82C55A_PLCC U4 PLCC44 1
20 Header-Male-2.54_2x8 P2 HDR-TH_16P-P2.54-V-M-R2-C8-S2.54 1
21 74HCT125 U7 PDIP-14 1

Attachments

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