Osborne Executive: Difference between revisions
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{{Infobox computer | {{Infobox computer | ||
| name = Osborne Executive | | name = Osborne Executive | ||
| image = [[File: | | image = [[File:Osbourne-executive.jpg|250px]] | ||
| caption = Osborne Executive portable computer | | caption = Osborne Executive portable computer | ||
| manufacturer = Osborne Computer Corporation | | manufacturer = Osborne Computer Corporation | ||
| Line 20: | Line 20: | ||
| codename = | | codename = | ||
| model = OCC Executive | | model = OCC Executive | ||
}} | }} | ||
The '''Osborne Executive''' is a portable CP/M-based computer released by Osborne Computer Corporation in 1982 as the successor to the Osborne 1. It featured a larger screen, more memory, and enhanced storage capacity, targeting business users seeking improved portability and performance. | The '''Osborne Executive''' is a portable CP/M-based computer released by Osborne Computer Corporation in 1982 as the successor to the Osborne 1. It featured a larger screen, more memory, and enhanced storage capacity, targeting business users seeking improved portability and performance. | ||
== | == Architecture and Processor == | ||
At its core, the Osborne Executive utilised a '''Zilog Z80A''' microprocessor running at 4 MHz. This 8-bit CPU was widely used in CP/M systems of the era, providing compatibility with a large library of business and productivity software. | At its core, the Osborne Executive utilised a '''Zilog Z80A''' microprocessor running at 4 MHz. This 8-bit CPU was widely used in CP/M systems of the era, providing compatibility with a large library of business and productivity software. | ||
The system architecture was designed to maximise performance within the CP/M environment, supporting bank-switched memory to address up to 128 KB of RAM—double that of its predecessor. | The system architecture was designed to maximise performance within the CP/M environment, supporting bank-switched memory to address up to 128 KB of RAM—double that of its predecessor. | ||
== | == Memory and Storage == | ||
The Executive shipped with: | The Executive shipped with: | ||
* '''128 KB RAM''' (bank-switched, with 64 KB accessible at a time under CP/M 2.2) | * '''128 KB RAM''' (bank-switched, with 64 KB accessible at a time under CP/M 2.2) | ||
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* No internal hard disk; all storage was floppy-based. | * No internal hard disk; all storage was floppy-based. | ||
== | == Display and Graphics == | ||
A key improvement over the Osborne 1 was the Executive's display: | A key improvement over the Osborne 1 was the Executive's display: | ||
* '''7-inch amber monochrome CRT''' | * '''7-inch amber monochrome CRT''' | ||
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The larger, higher-resolution screen made the Executive more suitable for word processing and spreadsheet applications. | The larger, higher-resolution screen made the Executive more suitable for word processing and spreadsheet applications. | ||
== | == Sound Capabilities == | ||
The Osborne Executive did not include dedicated sound hardware. Any audio output was limited to system beeps generated by a simple internal speaker. | The Osborne Executive did not include dedicated sound hardware. Any audio output was limited to system beeps generated by a simple internal speaker. | ||
== | == Input/Output and Expansion == | ||
The Executive provided a range of I/O ports for peripheral connectivity: | The Executive provided a range of I/O ports for peripheral connectivity: | ||
* '''IEEE-488 (GPIB) port''' for printers and external devices | * '''IEEE-488 (GPIB) port''' for printers and external devices | ||
| Line 62: | Line 61: | ||
The system was bundled with a suite of productivity software, including WordStar, SuperCalc, and dBase II. | The system was bundled with a suite of productivity software, including WordStar, SuperCalc, and dBase II. | ||
== | == PCB Schematics & Service Manual == | ||
<templatestyles src="Template:StyledTable/styles.css" /> | <templatestyles src="Template:StyledTable/styles.css" /> | ||
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{| class="wikitable styled-table" style="width:80%; text-align:center;" | {| class="wikitable styled-table" style="width:80%; text-align:center;" | ||
! | ! Main Logic Board | ||
! | ! Logic Board Schematics | ||
|- | |- | ||
| [[File:Osborne-Executive-Motherboard.jpg|thumb|center|300px|Osborne Executive Main Logic Board]] | | [[File:Osborne-Executive-Motherboard.jpg|thumb|center|300px|Osborne Executive Main Logic Board]] | ||
| [[File:Osborne | | [[File:Osborne Exec Schematic.pdf|center|thumb|Osborne Executive Schematics]] | ||
|} | |} | ||
For full service documentation, see the [ | For full service documentation, see the [[:Category:Osborne Documentation|Osborne Documentation]] category. | ||
== | == Gallery == | ||
<gallery mode="packed" heights="200"> | <gallery mode="packed" heights="200"> | ||
File: | File:Osbourne-executive.jpg|Osborne Executive portable computer (open) | ||
File: | File:Osborne_exec_keyboard_ditached.jpg|Osborne Executive with keyboard detached | ||
File: | File:Osborneexecutive-crt.jpg|7" amber CRT display (80×24 text) | ||
File:Osborne-Executive-Motherboard.jpg|Main logic board | File:Osborne-Executive-Motherboard.jpg|Main logic board | ||
</gallery> | </gallery> | ||
== | == Related Pages == | ||
* [[Osborne Executive | * [[Osborne Executive Maintenance Guide]] | ||
* [[Osborne Executive Troubleshooting Guide]] | * [[Osborne Executive Troubleshooting Guide]] | ||
* [[Osborne Executive Keyboard Repair Guide]] | * [[Osborne Executive Keyboard Repair Guide]] | ||
* [[Osborne Executive Capacitor Replacement Guide]] | * [[Osborne Executive Capacitor Replacement Guide]] | ||
[[Category:Osborne | [[Category:Osborne]] | ||