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JM001 Expansion RC80 Serial Card [v1.1] SIO/0 or /2 + CTC for SC126 V1.0

1 year ago 310
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This card may also work in the SC130. It supports BOTH SIO/2 and SIO/0 pin-bonded versions via jumpers. This card requires software to set the baud rates via the CTC.

This car may also require modifications/enhancement to ROMwbw eco-system to enable CTC settings using the MODE.COM utility and support via the SIO driver.

V1.1 Added ability to populate either an SIO/0 or the SIO/2 variant

Final boards for v1.1 not manufactured, yet. Modifications Tested via prototype board v1.0. Ok for SIO/0 or SIO/2 operation.

UPDATE: Board works with RomWBW 3.1.pre.5 which will configure the CTC channels to feed the SIO device. MODE.COM is effective in this and later RomWBW builds for changing the baud rates, etc.


JM001 SIO/0 or /2 + CTC

JM001 SIO/0 or /2 + CTC


ID Name Designator Footprint Quantity
1 INTEN P4 HDR-1X02-A-M-2.54MM OLD 1
2 1.8432 MHz X1 OSC-08 1
3 RC2014 Male 23 P6 HDR-1X23-S-M-2.54MM 1
4 Z80 SIO/2 U2 PDIP-40-0.6 1
5 10k R14,R13 RES-0.3 2
6 CTC JP6 HDR-1X03-S-M-2.54MM 1
7 SIO JP5 HDR-1X03-S-M-2.54MM 1
8 Z80 CTC U4 PDIP-28-0.6 1
9 100k R9,R11,R12,R10 RES-0.3 4
10 2k2 R6,R7,R8,R1,R2,R3,R4,R5 RES-0.3 8
11 74HCT138 U1 PDIP-16 1
12 100nF C3,C2,C1 CAP-RAD-2.54MM 3
13 PwrB JP4 HDR-1X02-S-M-2.54MM 1
14 PwrA JP3 HDR-1X02-S-M-2.54MM 1
15 Port B P3 HDR-1X06-A-M-2.54MM 1
16 Port A P2 HDR-1X06-A-M-2.54MM 1
17 JP_IEO JP2,JP7,JP8 HDR-1X02-S-M-2.54MM 3
18 JP_IEI JP1 HDR-1X02-S-M-2.54MM 1
19 RC2014 BUS P1 HDR-1X39-A-M-R-2.54MM 1


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Comments (1)

trawlergeek Reply

NOTE: Original design, if copied/cloned prior to 2/19/2020, the front silk screen was incorrect regarding J5 and J6 labels. Bringing up the board revealed the silk screen errors.

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