750 Family Device Support in Linux - Revision history

Longi at 16:21, 8 April 2009

2009-04-08T16:21:12Z

Wehe: /* {{750Ce}} */ added links section

2006-10-18T07:42:28Z

‎{{750Ce}}: added links section

Wyrfel: /* {{750CE}} */

2005-05-26T22:00:28Z

‎{{750CE}}

Wyrfel: /* {{750Ce}} */

2005-05-26T21:58:50Z

‎{{750Ce}}

Wyrfel at 21:58, 26 May 2005

2005-05-26T21:58:37Z

Whizkid: HD changed to ED

2005-03-21T00:48:22Z

HD changed to ED

Whizkid: Hard disk capacity

2005-03-21T00:47:52Z

Hard disk capacity

Whizkid: Added caddy/newer drive issues

2005-03-02T14:51:11Z

Added caddy/newer drive issues

66.41.135.254: Added model 750Ce

2005-02-28T18:54:31Z

Added model 750Ce

66.41.135.254: No modem

2005-02-28T18:40:27Z

No modem

@@ Line 35: / Line 35: @@
 ==Audio==
-The 750 uses the Crystal Semiconductor CS4248-KL sound chip. That chip works with Linux in other machines. I have not seen it work on the 750. I believe that is because IBM puts the chip in IO address space that is not normally used in Linux.
+The 750 uses the Crystal Semiconductor CS4248-KL sound chip.
-The chip can reside at 0x0030, 0x4E30, 0x8E30 or 0xCE30. The last time I tried to pass in the address to the Linux sound driver, it didn't work.
+Linux ALSA driver: This sound chip is supported by the snd-ad1848 kernel module. Use the following options line when loading this module:
 ==PCMCIA==

← Older revision		Revision as of 07:42, 18 October 2006
Line 85:		Line 85:
	==={{750Ce}}===		==={{750Ce}}===
	The 750Ce seems to be the step-child in the 750 family. It is not mentioned in the twbook specification book. From the Hardware Maintenance Manual, the CPU is an 80486DX2 running at 50MHz with a memory speed of 25MHz. It appears there was a 75MHz CPU option available as well. In addition, the TFT screen was "enhanced" in some way. Many parts are incompatible with other family members.		The 750Ce seems to be the step-child in the 750 family. It is not mentioned in the twbook specification book. From the Hardware Maintenance Manual, the CPU is an 80486DX2 running at 50MHz with a memory speed of 25MHz. It appears there was a 75MHz CPU option available as well. In addition, the TFT screen was "enhanced" in some way. Many parts are incompatible with other family members.
		+
		+	= Links =
		+	* This guide is listed at the [http://tuxmobil.org/ibm.html TuxMobil Linux laptop and notebook installation survey (IBM/Lenovo)].

@@ Line 83: / Line 83: @@
 The 750P adds an internal 16550-based serial port to handle the pen's data stream. Linux does support input from tablets, but this device has yet to work on Linux.
-==={{750CE}}===
+==={{750Ce}}===
 The 750Ce seems to be the step-child in the 750 family. It is not mentioned in the twbook specification book. From the Hardware Maintenance Manual, the CPU is an 80486DX2 running at 50MHz with a memory speed of 25MHz. It appears there was a 75MHz CPU option available as well. In addition, the TFT screen was "enhanced" in some way. Many parts are incompatible with other family members.

@@ Line 83: / Line 83: @@
 The 750P adds an internal 16550-based serial port to handle the pen's data stream. Linux does support input from tablets, but this device has yet to work on Linux.
-==={{750Ce}}===
+==={{750CE}}===
 The 750Ce seems to be the step-child in the 750 family. It is not mentioned in the twbook specification book. From the Hardware Maintenance Manual, the CPU is an 80486DX2 running at 50MHz with a memory speed of 25MHz. It appears there was a 75MHz CPU option available as well. In addition, the TFT screen was "enhanced" in some way. Many parts are incompatible with other family members.

@@ Line 73: / Line 73: @@
 The 750 family (except the 750P) could use the CPDP Mobile Communications Module that allowed one to use old cell phone technology to connect to the telephone network. 14.4 kbps speeds were possible.
 ==Differences==
-===750===
+==={{750}}===
 This is the standard, no-frills model. It shipped with IBM's PC-DOS 6.1.
-===750Cs===
+==={{750Cs}}===
 This model added a color screen. It was a dual-scan color screen, but still, Color!
-===750C===
+==={{750C}}===
 This model added a TFT color screen. It has similar specs to machines made twelve years later. At the time it was one of the best screens available.
-===750P===
+==={{750P}}===
 This model added an untethered pen. It could be used as a mouse or as an input device, like modern tablet PCs. This model shipped with PenDOS as well as Microsoft Windows 3.1 and Windows for Pen Computing, which included handwriting recognition and training software.
 The 750P adds an internal 16550-based serial port to handle the pen's data stream. Linux does support input from tablets, but this device has yet to work on Linux.
-===750Ce===
+==={{750Ce}}===
 The 750Ce seems to be the step-child in the 750 family. It is not mentioned in the twbook specification book. From the Hardware Maintenance Manual, the CPU is an 80486DX2 running at 50MHz with a memory speed of 25MHz. It appears there was a 75MHz CPU option available as well. In addition, the TFT screen was "enhanced" in some way. Many parts are incompatible with other family members.

@@ Line 55: / Line 55: @@
 ==Floppy Drive==
-The 750 came with a 2.88MB floppy drive. HD diskettes are hard to find nowadays. The floppy works with Linux, but the drive's diskette change status bit is reversed. Compensate for this by adding "floppy=thinkpad" to the kernel parameters at boot time, or the machine will not correctly recognize when the diskette has changed.
+The 750 came with a 2.88MB floppy drive. ED diskettes are hard to find nowadays. The floppy works with Linux, but the drive's diskette change status bit is reversed. Compensate for this by adding "floppy=thinkpad" to the kernel parameters at boot time, or the machine will not correctly recognize when the diskette has changed.
 ==Ports==

← Older revision		Revision as of 00:47, 21 March 2005
Line 51:		Line 51:

	The caddy does not work well with modern drives. The mounting nibs (replaced by screws in later machines) do not line up with holes in newer drives. You may have to modify a caddy by removing the nibs and packing it with suitable padding to immobilize the drive.		The caddy does not work well with modern drives. The mounting nibs (replaced by screws in later machines) do not line up with holes in newer drives. You may have to modify a caddy by removing the nibs and packing it with suitable padding to immobilize the drive.
		+
		+	The BIOS will recognize and use drives up to 8GB in capacity. Any operating system that uses the BIOS to access the hard drive such as DOS and Windows up to 3.1 or in compatability mode will also be limited to that capacity. Any OS that bypasses the BIOS, such as Windows using a 32-bit driver or Linux can use a drive up to 137GB in capacity, but the boot partition must be completely below the 8GB limit. With Linux, a small boot partition is recommended in any case, so just make sure it is on the first 8GB of your drive.

	==Floppy Drive==		==Floppy Drive==

← Older revision		Revision as of 14:51, 2 March 2005
Line 49:		Line 49:

	The connector shorts pins 1 and 2 so that modern hard drives configure themselves to be the slave drive when they are plugged in. This stops most operating systems from installing correctly. To get newer drives to work, you can either bend or break the pin on the drive. Since laptop drives are usually the only drive in a system, this may not be as bad as it sounds. Instead, you can scrape a trace on the connector in the caddy or on the system board. This means that the older drives will no longer work in the machine.		The connector shorts pins 1 and 2 so that modern hard drives configure themselves to be the slave drive when they are plugged in. This stops most operating systems from installing correctly. To get newer drives to work, you can either bend or break the pin on the drive. Since laptop drives are usually the only drive in a system, this may not be as bad as it sounds. Instead, you can scrape a trace on the connector in the caddy or on the system board. This means that the older drives will no longer work in the machine.
		+
		+	The caddy does not work well with modern drives. The mounting nibs (replaced by screws in later machines) do not line up with holes in newer drives. You may have to modify a caddy by removing the nibs and packing it with suitable padding to immobilize the drive.

	==Floppy Drive==		==Floppy Drive==

← Older revision		Revision as of 18:54, 28 February 2005
Line 79:		Line 79:

	The 750P adds an internal 16550-based serial port to handle the pen's data stream. Linux does support input from tablets, but this device has yet to work on Linux.		The 750P adds an internal 16550-based serial port to handle the pen's data stream. Linux does support input from tablets, but this device has yet to work on Linux.
		+	===750Ce===
		+	The 750Ce seems to be the step-child in the 750 family. It is not mentioned in the twbook specification book. From the Hardware Maintenance Manual, the CPU is an 80486DX2 running at 50MHz with a memory speed of 25MHz. It appears there was a 75MHz CPU option available as well. In addition, the TFT screen was "enhanced" in some way. Many parts are incompatible with other family members.

−		+	[[Category:750]] [[Category:750CS]] [[Category:750C]] [[Category:750P]] [[Category: 750CE]]
−	[[Category:750]] [[Category:750CS]] [[Category:750C]] [[Category:750P]]

@@ Line 60: / Line 60: @@
 The PS/2 port supports mice and keyboards with adaptors.
-The 750 has no infrared or USB ports.
+The 750 has no modem, infrared, or USB ports.
 ==Esoteric Devices==