T-RECURSIVE TECHNOLOGY ...capabilities
|requirements specification||Chances are, you know your needs. But can you state them clearly and completely? Teatronics Inc. gave us a general description for a high-end stage lighting control system. We turned this into a detailed specification of the LD series of lighting control consoles. Eighteen months later, the finished product matched our original spec.|
systems are a synergistic blend of hardware and software. That's why the
hardware designer should appreciate the problems of the software designer.
And that's why Starr Labs asked us to specify, and then design, their D5
For Teatronics Inc., we've designed a highly integrated processor for the Producer II+, the Comstar/MD288 control processors, and a scalable multiprocessor system for the LD series control consoles.
there are outfits that specialize in PCB layout. But an intelligent
layout requires hardware knowledge... and an optimal layout may require
hardware design skills as well. That's why Starr Labs chose us to lay out
their D5 processor board to their exacting specifications.
The board on the right is Starr Labs' original board. Our "D5" design, on the left, has four times the memory, four times the I/O capacity, and is 40% smaller.
We've also designed PCBs for Teatronics' LD series and Producer II+, for the McMaster Tandem Accelerator, and for our own SM-II multiprocessor.
not afraid to get our hands dirty. We've fabricated and built prototypes
of many of our hardware projects, including our own SM-II multiprocessor
To automate the McMaster Tandem Accelerator, we built a complete prototype of a multiprocessor control system, using off-the-shelf SBCs and our own interface boards.
Shown here is the three-processor control nucleus, installed in the equipment rack of the Tandem Accelerator.
better algorithm beats an optimizing compiler." Likewise, a better design
is often cheaper than a megabyte of RAM and a gigaHertz CPU. That's how
the Teatronics LD series lighting controller was able, with cheap
8-bit microcontrollers, to equal the performance of the competitors' 32-bit
CPUs and DSP coprocessors. That's how the Teatronics MD288 phase-controlled
96 Triacs with one microprocessor and one timer. And that's how we
made Forth Inc.'s
PAMELA simulator run faster on an IBM PC/XT than
its predecessor ran on a VAX.
For Altech Controls, we designed a distributed object-oriented language for their BACnet(tm)-capable industrial controller.
SWITCH: mov r2,dph ; stash new task adrs mov r3,dpl mov dph,UP ; save me at UAREA-100h dec dph mov dpl,#h'0 mov dr1,r0 ; save my Pstack pointer ; This loop copies internal RAM, from location ; (SP) down to 01, to external RAM. 6+7n cycles. ; The length is saved as the first byte. mov a,sp ; sp=high address, movx @dptr,a ; =length. inc dptr mov r0,a ; 00 won't be moved saveregs: mov a,@r0 ; 1 cycle movx @dptr,a ; 2 cycles inc dptr ; 2 cycles djnz r0,saveregs ; 2 cycles mov dph,r2 ; now get new task mov dpl,r3 ; This loop copies external RAM to internal RAM, ; and restores SP accordingly. 6+7n cycles. movx a,@dptr ; get high address inc dptr mov sp,a ; restore Rstack pointer mov r0,a getregs: movx a,@dptr inc dptr mov @r0,a djnz r0,getregs
don't just design; we implement as well. We wrote the complete operating
software for the Teatronics Comstar/MD288 and the AI-based McMaster
We also programmed major portions of the Teatronics LD series (system executive and user interface) and Quantum consoles, the Starr Labs EventStation MIDI controller, and Altech Controls' ANGL distributed control software.
And of course, our own CamelForth programming environment is finding wide use in the embedded programming community.
said "programmers don't like to document" never met us. We've written users'
manuals for the MicroProcessor Engineering Ltd. Z8/Super8 and
68HC16 Forth compilers, and for New Micros Inc.'s Small C compiler
for the 8051.
Some of our documentation is so good, it gets published. Look at the eight-part series on our CamelForth system, which appeared in The Computer Journal. And our three-part Forth Dimensions series describing the Chromium compiler has become one of the standard references on Forth metacompilers.
a dirty job, but someone has to do it." Perhaps you've been left with some
"legacy" code, and the original author is no longer available. Forth Inc.
contracted us to maintain and update their
BMDSIM simulator package
for just this reason.
Or perhaps your technical staff is swamped with work. Teatronics Inc. hired us to convert their Producer II software to a new CPU, and later to adapt and extend this software to produce the Producer II+ and Quantum lighting control consoles. And we've developed point-of-sale terminal kernels to support Forth Inc.'s Open Terminal Architecture project.
We currently maintain the operating software for Starr Labs' EventStation and MicroZone MIDI control products. (MicroZone photo courtesy of Starr Labs.)
...what can we do for you?