How many serial ports does the Mint Kernel Support?

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Taffman

How many serial ports does the Mint Kernel Support?

Post by Taffman »

Does anyone know how many serial ports the Mint 14 Kernel supports. I hear rumout thats it's no more than 4. I have an aftermarket 4 port serial card installed using ttyS5 -ttyS7. Only ttyS6 & ttyS7 work. All tty's on this board sharing the same irq = 19.

Code: Select all

/dev/ttyS0, UART: unknown, Port: 0x03f8, IRQ: 4
/dev/ttyS1, UART: unknown, Port: 0x02f8, IRQ: 3
/dev/ttyS10, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS11, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS12, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS13, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS14, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS15, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS16, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS17, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS18, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS19, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS2, UART: unknown, Port: 0x03e8, IRQ: 4
/dev/ttyS20, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS21, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS22, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS23, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS24, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS25, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS26, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS27, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS28, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS29, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS3, UART: unknown, Port: 0x02e8, IRQ: 3
/dev/ttyS30, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS31, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS4, UART: 16550A, Port: 0xcc20, IRQ: 19
/dev/ttyS5, UART: 16550A, Port: 0xcc28, IRQ: 19
/dev/ttyS6, UART: 16550A, Port: 0xcc30, IRQ: 19
/dev/ttyS7, UART: 16550A, Port: 0xcc38, IRQ: 19
/dev/ttyS8, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS9, UART: unknown, Port: 0x0000, IRQ: 0
Last edited by LockBot on Wed Dec 28, 2022 7:16 am, edited 1 time in total.
Reason: Topic automatically closed 6 months after creation. New replies are no longer allowed.
Taffman

Re: How many serial ports does the Mint Kernel Support?

Post by Taffman »

Anyone ??
AlbertP
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Re: How many serial ports does the Mint Kernel Support?

Post by AlbertP »

These how-to's are both quite old, so I don't think that will help anymore - the first one is about 90's ISA-style serial cards (and onboard serial ports of motherboards, which still work the same way) and not suitable for modern expansion cards which use PCI or PCI Express instead of an ISA or (onboard) LPC connection.

The card that you are using, is that a PCI card?

There is not such a limit to the number of serial ports as far as I know. The USB serial drivers support 256 devices according to the kernel documentation, so PCI drivers should be able to handle over 4 devices too.
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