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Author Topic: Q&A with Werner Lindner (technical director of the ENTERPRISE Computers GmbH) (Read 31532 times)

Offline Zozosoft

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"Combined into IDC socket with 5v and 0v. Special adapter was designed for Joystick/mouse use"...
Only Control 1 port kept. Conector replaced 12 pin edge (2 pin unused) to 10 pin IDC.

Offline Zozosoft

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I try to summarize the changes from EP128:
-onboard EXDOS
-4MHz Z80A replaced to 6MHz Z80B
-8x1 bit RAM ICs replaced with 2x4 bit ICs as Video memory
-EXOS ROM socket still 32K
-cartridge port removed, replaced by onboard cartridge ROM socket, but it is only 32K
-2 additional 32K ROM sockets
-external System Bus connector and the internal EXP1&EXP2 connectors removed, replaced by Internal System Bus connector
-internal RAM expansion have 256Kbit ICs instead the old 64Kbit ICs. Then the total memory are 320K (64+256)
-PAL video ICs and RF modulator removed (but you can see the place for these on the prototype PCBs), RGB monitor output with 15 pin DA-15S connector, ond monochrome output on RCA
-internal spekar replaced with bigger one (Why not removed? :roll: )
-REM2 removed. REM1 controled by both REM1 and REM2 signals
-Serial/Lan connector only kept for Enterprise LAN. Connector replaced to DIN socket
-new hw Serial port added on same PCB with the RAM expansion. It is built with Z80 SIO. But the new SERIAL: driver need to be written.
-Printer connector replaced with 14 pin IDC connector
-Control Port 2 removed, Control Port 1 connector replaced with 10 pin IDC connector.
-keyboard replaced by modified PC keyboard, but still using membrane. Membrane connectors are same with the old.
-power LED moved to the power connector, the light can be viewable at the speaker holes
-planned new external PSU which also generate +12V and -5V. But the kept the +5V regulators in the machine :roll: This change only on schematic, the existing prototype borads using the old PSU


Offline szipucsu

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image
Does it really work? Do you have one?
Anyway, where is the LOCK key? :D

Offline Zozosoft

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Does it really work?
Yes!

Quote
Do you have one?
Werner have two :-) (One complete and one with the "external Enterprise keyboard")

Quote
Anyway, where is the LOCK key? :D
See the keymap in the drawings PDF.
Used existing components of PC keyboard, not produced Enterprise key caps for the prototype.
12240-0

Online lgb

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Werner have two :-) (One complete and one with the "external Enterprise keyboard")

Aha, so soon, you will have one :)

Offline szipucsu

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not produced Enterprise key caps for the prototype.
(Attachment Link)
So, the only possibility to reach ALT, SHIFT or CAPS words in the status line was using SET 6,8, SET 6,2, SET 6,1?

Offline Zozosoft

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So, the only possibility to reach ALT, SHIFT or CAPS words in the status line was using SET 6,8, SET 6,2, SET 6,1?
:?: Lock is under the Enter. Just not printed the "LOCK" to the key cap.

Offline Zozosoft

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Aha, so soon, you will have one :)
:lol: Werner want to keep the working prototypes. But we talking about one non working board... :ds_icon_cheesygrin:

Offline Zozosoft

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I asked about the model number: Why 911? Because the Porsche 911? :-D
Quote from: WernerLindner
I have absolutely no idea. Maybe it was the emergency call number at that time :-) ? Today it is 999 in England but USA and Canada are using the 9-1-1. But for the model number history this machine should have got the model number 300 (500=64k, 400=128k, 300=PW320), don't you think so too?
Yes, it is more logical.

Bruce! Do you have any idea about the 911 at that time?
« Last Edit: 2015.April.07. 16:21:12 by szipucsu »

Offline Tricky

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Zozo,

In the UK its been 999 for the emergency services long before the Enterprise so some link to 911 in the US is possible. As you guys say only alternative is the link to Porsche 911's. In the 80's the 911 had a reputation as a car for a certain type of people (bankers) so would be a surprising link.

Machine looks fascinating though. Keep up the great work !!

Cheers

Tricky
Obsolescence Built in (to me)

Offline BruceTanner

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Bruce! Do you have any idea about the 911 at that time?

No idea at all, I know nothing about this machine! Maybe wishful thinking regarding speed, maybe someone "high up" in Enterprise had a Porsche 911, maybe number of days between announcement and shipping :mrgreen:

As others have said 999 has been the emergency number in the UK since the 1930s. An American link seems unlikely since it was never sold there.

Offline Zozosoft

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maybe number of days between announcement and shipping :mrgreen:
:smt044

Offline Zozosoft

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I look for the origin of the wrong PW360 name. Used google with date range limited search.
This article from 2005 the origin.
CiH! You wrote this :oops:
Can you remember for your source?

Evidence for PW320: Enterprise Code Book, page 8
And Werner's memory :-)

Offline SlashNet

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(P)roject (W)erner 320? :lol:
Press ENTER to exit BASIC

Offline CiH

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Quote
CiH! You wrote this :oops:

From an imperfectly remembered article in Popular Computing Weekly. As already shown earlier in this thread!