This Osborne Executive was modified by a third company to include a SCSI bus and internal SCSI hard drive in place of one of the floppy drives. There was an external SCSI connector in the power cord compartment. This can be used to connect to external SCSI devices.
/media/museum/photos/osborne_executive_hd_1.jpg
title
subtitle
text
image
FRONT PANEL
From left to right:\
• Brightness and contrast adjustments\
• External NTSC monitor connector, normally covered when not used\
• Reset switch\
• Composite video output jack\
• The On/Off switch is located beside the Executive label.
The main board is an enhanced version of the Osborne 1's, including the floppy drives controller but not the user RAM which is transferred into a piggy-back RAM card.
**(1)** Video RAM chips (4 x 2 KB 2128)\
**(2)** FD controller RAM buffer (2x2128)\
**(3)** Character generator 2128 RAM chip. All the characters are transferred into RAM at power up\
**(4)** Floppy drives controller\
**(5)** BIOS ROM\
**(6)** Floppy drives connector\
**(7)** Z80A processor, here a NEC D780C\
**(8)** Power connector\
**(9)** RAM card connector\
**(10)** Composite video output jack\
**(11)** Reset switch\
**(12)** NTSC video output connector, covered when not used\
**(13)** Built-in display contrast and brightness knobs\
**(14)** Keyboard connector\
**(15)** IEEE-488 connector\
**(16)** Printer serial connector\
**(17)** Modem serial connector\
**(18)** 6821 I/O chips dedicated to keyboard and IEEE-488 management\
**(19)** Intel 8253 programmable timer\
**(20)** Z80A SIO handling serial ports
The ring binder holds:\
• System specifications (memory configuration, connector diagrams...)\
• Reference guides for CP/M Plus,WordStar, SuperCalc, MBASIC and CBASIC.
The Executive Guides binder hold 5 volumes:\
• Beginners guide\
• Mastering the Osborne Executive\
• Working with Text and Spreadsheets\
• Managing information with Personal Pearl\
• Operating systems.
The famous ELIZA program (the computer psychiatrist) was originally written in 1965 by Dr. Joseph Weizenbaum at MIT. The program soon became famous for its ability to make people think they were talking not with a computer but with a person. Most people, at the time, found it fascinating.\
This version allowed to change ELIZA's conversational habits, and even write completely new subject by programming scripts.
The Executive is the successor of the Osborne 1, from which it keeps the good points and correct its flaws. More memory, bigger screen, more powerful software and... higher price.
When closed, the Executive looks like a sewing machine! Once opened, the detachable keyboard is connected to the main unit through a quite short coiled cord. The keyboard can be tilted for a better typing. It has a separated numeric keypad and 4 cursor keys. The layout of these keys is not very convenient. There is "left" & "up" on one row, and "down" & "right" on the other...
The front panel of the Executive is divided in four parts. In the center, one can find the built-in amber monitor (13 x 10 cm) bigger than the Osborne 1 one. On the right hand side, there is the fan grid, the Executive logo and the on/off button. The two 5.25" half-height disk drives, are mounted horizontaly just above an empty disk storage space. Different connectors are placed at the bottom of the front panel: two RS232c/serial (for printers and modem), one Centronics and the keyboard connector. Next to them are brightness and contrast control knobs, as well as a reset button.
At the back of the system is the handle to carry the system once it is closed. Under this handle is the fan trap door, which you have to open before starting to work. The Executive has of course its own power supply unit, but what is more uncommon, is that it can accept 110v or 220v, the system will convert both. This was useful for people traveling a lot.
The built-in monitor was the main flaw of the Osborne 1. This tiny screen was displaying 52 of 132 virtual columns (this was done by scrolling), resulting in 2 mm high characters! The Executive has a wider screen which can really display 80 columns, though some critics said it was still too small. The characters can be displayed in normal mode, half intensity, inverse or blink. Two character sets are available, and independant windows can be defined.
The Executive was delivered with a binder containing 14 disks! There was CP/M+, Wordstar 3.3, Mailmerge, Supercalc 1.12, Pearl (file manager), Microsoft Basic 5.22, CBasic 2 and several tools. The Executive can also read disks from many other systems: Osborne 1, IBM PC under CP/M 86, DEC VT 180, Xerox 820, Cromenco Minidisk and UCSD p. It can also emulate several terminal types: VT 100, ADM, Hazeltine, HP... and know several communication protocols: 3270, 2780, 3780 and X25.
Though most reviews said it had 128 KB, the Executive is equiped with 124 KB from which only 60 KB are left free for the user. The missing 4K was because of the bank switching it couldn't switch the whole 64K only 60K could be switched the 4K had to remain common. The memory can however be expanded to 384 KB.
Curtis A. Ingraham (former Osborne's employee) reports:
Following the introduction of the Executive, OCC was developing a PC-compatible portable (not the Encore) which looked much like the Executive. This project was near production at the time of the bankruptcy. I recall that the PC-compatible was to be called the "Osborne PC". It is quite true that the PC announcement killed the sales of the exsiting models. The company was preparing to offer an upgrade plan to convert Executives to PCs in the hopes of sustaining Executive sales, but the sales died anyway. I believe five copies of the PC were built, and at least one of them was working. It looked much like the Executive. The company was desperately trying to sell the design to other companies just before the bankruptcy.
yann64andClaude Opus 5.5
b274874139