MSX FLEX project

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Van st1mpy

Paladin (838)

afbeelding van st1mpy

27-04-2021, 13:17

I want to know if HB-55 use above was successful, as when I was checking a peripheral for HB-75 's expansion port pins, I thought the pinout did not match the standard layout (I was only able to check power and gnd). What I want to know is the pinout of hb 55/75 expansion port (Japanese model, I don't own one of these machines.)

Van GreyWolf

Champion (407)

afbeelding van GreyWolf

27-04-2021, 13:27

bsittler wrote:

Has anyone built the cable to use FLEX with Daewoo machines? I have a CPC-300E and I think the connector has a swapped pinout compared to others but I'm not certain

Failing that, is there any other device to convert this Daewoo expansion slot into a usable MSX slot?

I think this slot is similar to the standard by signals, see here:
https://www.msx.org/wiki/Expansion_bus_slots

Van bsittler

Master (246)

afbeelding van bsittler

27-04-2021, 17:03

GreyWolf wrote:
bsittler wrote:

Has anyone built the cable to use FLEX with Daewoo machines? I have a CPC-300E and I think the connector has a swapped pinout compared to others but I'm not certain

Failing that, is there any other device to convert this Daewoo expansion slot into a usable MSX slot?

I think this slot is similar to the standard by signals, see here:
https://www.msx.org/wiki/Expansion_bus_slots

Thanks! Yeah, I guess the even and odd pins (in other words, the top and bottom rows) are exchanged? I wondered if anyone had built an adapter for it to use standard cartridges somehow, and wondered whether MSX FLEX (minus the edge connector adapter) with every pair of wires twisted would work

Van bsittler

Master (246)

afbeelding van bsittler

27-04-2021, 19:02

(also I think the opposite pattern of IDC connector can solve this, but I don't know where to find that)

Van Pencioner

Scribe (1479)

afbeelding van Pencioner

27-04-2021, 20:35

If you solder the IDC at other side of cartridge part PCB, it will effectively mirror your pins. But then you have to make changes to 3d printed case obviously

Van bsittler

Master (246)

afbeelding van bsittler

15-11-2021, 18:16

I am embarrassed it took me so long to realize (and that realization came thanks to seeing another project) but you can use double-ended pin headers plus another ribbon cable to do this signal reversal

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