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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ

content/museum/ibm-pc-portable-model-5155.md

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+---
+title: IBM PC Portable - Model 5155
+categories:
+- Computers
+types:
+- Transportable
+origins:
+- U.S.A.
+years:
+- '1984'
+cpus:
+- Intel 8088
+params:
+  name: PC Portable - Model 5155
+  company: /companies/ibm
+  company_name: IBM
+  specs:
+  - label: NAME
+    value: PC Portable - Model 5155
+  - label: MANUFACTURER
+    value: IBM
+  - label: TYPE
+    value: Transportable
+  - label: ORIGIN
+    value: U.S.A.
+  - label: YEAR
+    value: '1984'
+  - label: BUILT IN LANGUAGE
+    value: Basic
+  - label: KEYBOARD
+    value: |-
+      QWERTY / AZERTY mechanical keyboard\
+      10 function keys and numeric keypad, 83 keys
+  - label: CPU
+    value: Intel 8088
+  - label: SPEED
+    value: 4.77 Mhz
+  - label: CO-PROCESSOR
+    value: 8087 arithmetic co-processor
+  - label: RAM
+    value: 256 kb (up to 640 kb)
+  - label: ROM
+    value: 40 kb
+  - label: TEXT MODES
+    value: 25 x 80
+  - label: GRAPHIC MODES
+    value: 'CGA modes : 320 x 200 / 640 x 200'
+  - label: COLORS
+    value: 9'' built-in amber display
+  - label: SOUND
+    value: Beeper
+  - label: SIZE / WEIGHT
+    value: 50 x 43 x 20 cm / 13,6 kg
+  - label: I/O PORTS
+    value: 7 expansion slots
+  - label: BUILT IN MEDIA
+    value: 1 or 2 x 5''1/4 disk-drives (360k)
+  - label: OS
+    value: PC-DOS 2.1
+  - label: POWER SUPPLY
+    value: 100-240 v, 50-60 Hz
+  - label: PRICE
+    value: 3811 (France, 84)
+  tabs:
+  - links
+  links:
+  - title: Web Wiz CAPTCHA
+    url: http://www.webwizcaptcha.com
+    text: ''
+  comments:
+  - author: Frank (The Netherlands)
+    date: Tuesday 22nd June 2010
+    text: I have to concur with Curtis. The motherboard in used the 5155 was an XT board.
+  - author: Curtis McCain (TX/USA)
+    date: Sunday 24th August 2008
+    text: |-
+      The entry is WRONG!
+
+      The motherboard used in this unit was a standard XT motherboard with 8 slots.
+  - author: Erich Hespenheide (Earth)
+    date: Tuesday 6th November 2007
+    text: I still have one of these, complete with documentation and canvas case. Hardware mods on my machine include an 286 (31Mhz equivalent of XT) motherboard; 1Mb of memory; SCSI 80 Mb hard disk, PCjr monitor; power switch for internal monitor; and a 1200 baud modem. It worked a few years ago the last time I tried powering it up.
+  - author: Matt (US)
+    date: Sunday 20th August 2006
+    text: I've seen them sold for $250 plus
+  - author: Earl (Portland, OR)
+    date: Saturday 25th December 2004
+    text: I also have a 5155. I recently put an AST SixPak expansion card with 384 Kb into the unit. Now it's a completely functional, 640K IBM system. Runs great. It was given to me by a friend. When I received it, it was very close to brand new. What a find! I enjoy taking it out and firing it up from time to time. Another friend gave me a load of old IBM XT vintage software. It's just like the good ol' days!
+  - author: Dave (Rhode Island)
+    date: Wednesday 1st September 2004
+    text: |-
+      I have an IBM Portable Computer Model 5155 in working condition. This thing is cool, does it have a value?
+
+      Dave
+  related:
+  - /museum/amstrad-pc-1512
+  - /museum/amstrad-pc-1640
+  - /museum/amstrad-ppc-512-640
+  - /museum/ibm-pc-at
+  - /museum/ibm-pc-model-5150
+  - /museum/ibm-pc-xt-286
+  - /museum/ibm-pc-xt-model-5160
+  - /museum/ibm-ps-1
+  - /museum/micronique-hector-xt
+  oc_id: 446
+  source:
+    url: https://web.archive.org/web/20230607134105/http://www.old-computers.com/museum/computer.asp?c=446
+    date: '2023-06-07'
+---
+
+This computer was the portable version of the [PC XT](/museum/ibm-pc-xt-model-5160/).\
+It was also the second IBM's "transportable" computer. The first one was the IBM 5100, the first personal portable computer ever built that was released in September 1975
+
+The OS was the PC-DOS 2.1, first delivered with the PC Junior.
+
+The portable was equipped with a 9'' amber screen which could display texts and graphics.
+
+It offered 7 extension slots, 5 being free (4 shorts and only 1 long).
+
+The main drawback of the Portable is that it was not delivered with a hard-disk, and it weights a lot (30lbs) !. On the other hand, it used the same mother board as the IBM 5150 (the classic PC form factor). This enable an such enclined person to be able to upgrade this computer up to a Pentium II !
+
+---
+
+**Paul Reitman's** memories:\
+The portable PC XT was my first “laptop” computer, and as an owner of a modern portable today, thinking back about this one just blows my mind.\
+I was an IBM Information Developer at the time writing the User’s Guide for the XT and I was doing it on this beast – in a text file and in IBM Script which looks a lot like HTML today. But the interesting part of this story is that I had taken the box home to work – yes, I was one of the first work-at-homers to try it out – and while trying to get it up to the den I DROPPED IT DOWN THE STAIRS.\
+It really weighed what felt like a ton, and after lugging it all the way home I was worn out, and must have let the handle slip through my sweaty grip. Well, the box bounced down at least 30 steps or so end over end while I watched in horror, already calculating how I would explain this to my boss, who already thought I was a freak because I wanted to illustrate the user’s guides with a yellow duck. To my amazement, I took the portable apart, reseated all the cards, and it powered right back up. Good as new.\
+Try that today with a portable computer!