Here you can find some documents, related to my hardware/software projects
and interests. The most of documents are in Portable Document Format
(pdf) and can be read using Adobe Acrobat Reader.
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description
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download
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E510
- Velocity sensitive MIDI keyboard encoder. Supports up to 128 keys.
Discontinued but very interesting.
An full functional replacement unit for this chip is described in mkcv124 project. |
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ULN2801/2/3/4/5
- 8 Darlington transistors array with common emitter and integral
suppression diodes for inductive loads. Suitable for driving loads
up to 500 mA ( like relais, coils etc ). Can be used in mdec64
project based decoders for driving organ pipe valves.
by SGS Thomson |
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CD74HC4094
- 8 stage shift ans store buss register with three states. I used
them in my mdec64
project.
by Harris Semiconductor |
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The
Usenet MIDI Primer - an article about MIDI standard including
author's comment. Very useful reading in my opinion.
by Bob McQueer |
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MDEC64
logic flowchart diagram - the main problem
while designing MIDI decoder is receiving/recognition of MIDI messages
in real time. Here you can find the flowchart of my MDEC64
project interrupt routine which is the core of device software.
by Jordan D. Petkov |
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Practical
MIDI packs generating / transmitting -
an article written by me as answer of frequently asked questions
concerning my MIDI
keyboard project.
by Jordan D. Petkov |
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MIDI
tunning standard - an excerpt from General MIDI specification
concerning tunning via SysEx messages. Very interesting for builders
of so microtonal controllers.
by Microtonal Synthesis |
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B4
organ emulator MIDI implementation. I tried to contact Native
Instruments for requesting information about MIDI messages used
for controlling their great B4 software. They did not respond,
so I was forced to search over tne Internet. As a result I found
some scanned pages from B4 users manual. The document shown here
is adapted from this scanned material.
by Native Instruments |
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PC
Technical Reference Manual - a graphical set of diagrams, schematic
and pinout description of the most used PC devices/connectors
by Timo O. Jalkanen |
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