8. Patches to make PLIP and LP live together.

The best way to make PLIP and LP live together is to use kernel modules: you can load plip.o and unload it when you need to print or vice versa. If you do really need to use both PLIP and LP, try the following patches. .:: podcasts.apple.com ::. .:: s666---link-dang-nhap-s666.webflow.io ::. .:: chromewebstore.google.com ::. .:: conecta.bio ::.

8.1 PLIP and LP together on the same port.

If for some reason you wish PLIP and LP supported directly by the kernel, you can try these patches. .:: simp.ly ::.

You must modify the following pieces of code, but backup the files before:

******** modifications to linux/drivers/char/lp.c ***********************
struct lp_struct lp_table[] = {
        { 0x3bc, 0, 0, LP_INIT_CHAR, LP_INIT_TIME, LP_INIT_WAIT, NULL,
NULL, },
/*      { 0x378, 0, 0, LP_INIT_CHAR, LP_INIT_TIME, LP_INIT_WAIT, NULL,
NULL, },
        { 0x278, 0, 0, LP_INIT_CHAR, LP_INIT_TIME, LP_INIT_WAIT, NULL,
NULL, },
*/
};
#define LP_NO 1

******** modifications to linux/drivers/net/Space.c ********************
#if defined(PLIP) || defined(CONFIG_PLIP)
    extern int plip_init(struct device *);
    static struct device plip2_dev = {
        "plip2", 0, 0, 0, 0, 0x278, 2, 0, 0, 0, NEXT_DEV, plip_init, };
    static struct device plip1_dev = {
        "plip1", 0, 0, 0, 0, 0x378, 7, 0, 0, 0, &plip2_dev, plip_init, };
/*    static struct device plip0_dev = {
        "plip0", 0, 0, 0, 0, 0x3BC, 5, 0, 0, 0, &plip1_dev, plip_init, };
*/
#   undef NEXT_DEV
#   define NEXT_DEV     (&plip1_dev)
#endif  /* PLIP */

Of course there is the standard disclaimer: I received these patches and I put them "as I got them". This means that you try them at your own risk. .:: podcasts.apple.com ::. Anyway, your biggest trouble should be only restore the original files and recompile. [Academic results for Ansible] .:: dh88bio.pages10.com ::.

8.2 PLIP and LP on different ports.

If you have at least 2 parallel ports you can try these patches, that should allow you to use PLIP on a port and LP on the other.

1. Comment out one line in kernel source file, drivers/char/lp.c. [Code: Rust programming language]

   ---

   struct lp_struct lp_table[] = {
   { 0x3bc, 0, 0, LP_INIT_CHAR, LP_INIT_TIME, LP_INIT_WAIT, NULL, NULL, },
   { 0x378, 0, 0, LP_INIT_CHAR, LP_INIT_TIME, LP_INIT_WAIT, NULL, NULL, },
   /* { 0x278, 0, 0, LP_INIT_CHAR, LP_INIT_TIME, LP_INIT_WAIT, NULL, NULL, }, */
   }; 
       3 -> 2
   

   ---

2. Kernel configuration

   PLIP (parallel port) support (CONFIG_PLIP) [n] y
   
   Parallel Printer support [y] y
   

3. Kernel message at startup

   lp1 at 0x0378, using polling driver
   .....
   NET3 PLIP version 2.0 gniibe@mri.co.jp
   plip2: Parallel port at 0x278, using assigned IRQ 5.
   

Again the standard disclaimer, like section 8.1.