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Getting my PCMCIA Serial card to work

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I like old PCMCIA cards, and would like to get a serial card to work
on a Thinkpad X40 running Debian 12.5.

The card is just called "Serial I/O PC Card" and should be physically
and electrically compatible, 3.3V/5V, 16 bit. I think it is this:
https://shop.ocr.ca/media/pdf/Socket-Mobile/srliopc.pdf

It didn't immediately work when I inserted it, and instead of spending
hours following the red herring down the rabbit hole I thought I
should try asking here first for a change. This is what I get from
dmesg:

[  331.059401] pcmcia_socket pcmcia_socket0: pccard: PCMCIA card
inserted into slot 0
[  331.059429] pcmcia_socket pcmcia_socket0: cs: memory probe
0xd8200000-0xdf9fffff:
[  331.060446]  excluding 0xd8980000-0xd90fffff 0xdaf00000-0xdb67ffff
0xdbe00000-0xdc57ffff 0xdcd00000-0xdd47ffff 0xddc00000-0xde37ffff
0xdeb00000-0xdf27ffff
[  331.068677] pcmcia (null): pcmcia: registering new device
pcmcia(null) (IRQ: 3)
[  331.141504] orinoco 0.15 (David Gibson
<hermes@gibson.dropbear.id.au>, Pavel Roskin <proski@gnu.org>, et al)
[  331.197037] spectrum_cs 0.0: Failed to initialize firmware (err = -16)
[  331.197062] spectrum_cs: orinoco_init() failed

When I searched for "spectrum_cs" and "orinico" I got a lot of results
for some PC Card WLAN interface, which isn't right. Does anyone
recognize this? It should have a bog-standard 16550 compatible UART
and PCMCIA is more or less an ISA bus so I did not foresee any
problem. Is it perhaps incorrectly detecting my card as a WLAN card?

// Anders

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Thread

Getting my PCMCIA Serial card to work Anders Andersson <pipatron@gmail.com> - 2024-03-02 11:20 +0100
  Re: Getting my PCMCIA Serial card to work Anssi Saari <anssi.saari@debian-user.mail.kapsi.fi> - 2024-03-02 12:10 +0100
  Re: Getting my PCMCIA Serial card to work Dan Ritter <dsr@randomstring.org> - 2024-03-02 13:20 +0100

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