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

content/museum/siemens-sme.md

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+---
+title: Siemens SME
+categories:
+- Computers
+types:
+- Professional Computer
+origins:
+- Germany
+years:
+- '1978'
+cpus:
+- Intel 8085
+params:
+  name: SME
+  company: /companies/siemens
+  company_name: Siemens
+  specs:
+  - label: NAME
+    value: SME
+  - label: MANUFACTURER
+    value: Siemens
+  - label: TYPE
+    value: Professional Computer
+  - label: ORIGIN
+    value: Germany
+  - label: YEAR
+    value: '1978'
+  - label: BUILT IN LANGUAGE
+    value: ROM monitor
+  - label: KEYBOARD
+    value: Full-stroke 62 keys managed by an Intel 8741 processor
+  - label: CPU
+    value: Intel 8085
+  - label: SPEED
+    value: 4 Mhz
+  - label: CO-PROCESSOR
+    value: Intel 8080 I/O dedicated
+  - label: RAM
+    value: Up to 64 KB
+  - label: ROM
+    value: 2 KB Boot ROM + 2 KB Monitor
+  - label: TEXT MODES
+    value: 80 columns x 25 rows
+  - label: GRAPHIC MODES
+    value: Text only
+  - label: I/O PORTS
+    value: Multibus expansion slot
+  - label: BUILT IN MEDIA
+    value: 8'' floppy drive
+  - label: OS
+    value: ISIS operating system
+  - label: POWER SUPPLY
+    value: Built-in power supply unit
+  - label: PERIPHERALS
+    value: EPROM programmer
+  - label: PRICE
+    value: Expensive!
+  tabs:
+  - photos
+  - hardware
+  - software
+  photos:
+  - title: BACK SIDE
+    subtitle: ''
+    text: |-
+      DB25 connectors, from top to bottom:
+
+      \- Serial port 1\
+      \- Serial port 2\
+      \- Paper tape puncher\
+      \- Paper tape reader\
+      \- Parallel printer\
+      \- Eprom programmer
+
+      Left connector and cable go to the keyboard.
+    image: null
+  - title: MOTHERBOARD
+    subtitle: ''
+    text: |-
+      **(1)** RAM memory chips area\
+      **(2)** 8202 RAM controller chip\
+      **(3)** 8219 bus controller chip\
+      **(4)** EPROM chip holding the monitor program\
+      **(5)** 8085 processor\
+      **(6)** 8259 Programmable interrupt controller chips\
+      **(7)** 8251 Programmable communication interface (USART) chips\
+      **(8)** 8253 Programmable Interval Timer chip\
+      **(9)** Data switches and leds.
+    image: null
+  hardware:
+  - title: 'F.D. CONTROLLER CARD #1'
+    subtitle: ''
+    text: |-
+      These 2 boards (#1, #2)were necessary to connect a floppy drive to the MDS.\
+      the controller was built around Intel's Series 3000 computing elements and had 4 MMI 6340 NiCR 512x8 PROMs for "firmware".\
+      Data transfer is done using DMA.
+    image: null
+  - title: 'F.D. CONTROLLER CARD #2'
+    subtitle: ''
+    text: ''
+    image: null
+  screenshots:
+  - title: ISIS O.S.
+    subtitle: ''
+    text: ISIS Operating System label, and directory of the ISIS system diskette!
+    image: null
+  comments:
+  - author: Tom (Switzerland)
+    date: Friday 10th January 2003
+    text: |-
+      I used this system about 15 Year's ago for Software/Hardware develpment in Siemens-Albis AG, Zurich, Switzerland.
+
+      I remeber that there were up to 10 drives, :F0: to :F9:, :F0: used to be the boot drive!
+
+      each Filename had up to 6 characters, the Extension had up to 3 characters.
+  oc_id: 711
+  source:
+    url: https://web.archive.org/web/20230603012045/http://www.old-computers.com/museum/computer.asp?c=711
+    date: '2023-06-03'
+---
+
+In the late 70s Siemens licencied the Intel 8080 processor and became a 8080 chip second source European manufacturer.
+
+After having translated the 8080 user's manual to German, they marketed the SME development system ( **S**iemens **M**icrocomputer **E**ntwicklungssystem) which was the same system as the Intel Intellec Series 2 MDS (Microcomputer Development System). The system had a 8080 processor in its first version, later an Intel P8080A-2 (an increased-speed 8080), then finally a 4 MHz. 8085.
+
+For the major part, the SME was made by Intel in USA. The only difference between Intel and Siemens systems was the cabinet colour: grey for Siemens's, blue for Intel's.\
+The SME system was very popular with german 8080 /8085 hardware and firmware developers.
+
+Thanks to **Gottfried Silberhorn** from Germany for information and pictures.
+
+<table> <tr> <td></td> <td>We need more info about this computer ! If you designed, used, or have more info about this system, please send us pictures or anything you might find useful.</td> <td></td> </tr> </table>