User manual

Table Of Contents
Ending a Deployment
1. The system terminates a deployment if the operator selects the termination menu
option, the battery falls below 7.5 V, or the flash card is full.
2. After terminating a deployment the firmware places the TT8v2 in low power
sleep (LPS).
MMP Components
See Chapter 1, “MMP Schematic”, Figure 1-3, and Chapter 1, “MMP Components” for
an illustration of the MMP and a summary of standard MMP components. Each component is
further detailed in this section.
Tattletale 8v2 Micro-Controller
The Tattletale 8 version 2 (TT8v2) is the physical brain of the MMP and is a single-board
micro-controller with significant computational and I/O capabilities. The main processor is a
Motorola 68332, a 68000 family CPU with multiple co-processors and I/O modules on a single
IC. In addition to the 68332, the TT8v2 includes a PIC micro-controller serving as a boot
manager and programmable real-time clock (RTC), 256 Kbytes of flash memory, 1 Mbyte of
RAM, an 8 Kbyte serial EEPROM, two RS-232 serial communication ports, many flexibly
programmable digital I/O channels, and a 12-bit, 8-channel successive approximation analog-to-
digital converter. A TT8v2 manual with a complete description can be downloaded from the
Onset Computer web site, www.onsetcomp.com.
Two programs, the TOM8 and PicoDOS, are stored in non-volatile flash memory, which
retains information when power is removed. The TOM8 (Tiny Onset Monitor for the TT8v2) is a
mini-monitor that oversees the loading and running of firmware. PicoDOS links the TT8v2 to the
AT8 board and the 512MB PCMCIA flash card and provides the operator with access to the file
system.
NOTE
Download PicoDOS user manuals at www.persistor.com.
The MMP firmware operating system programs include:
Communications and control routines for system components.
Logical structure that guides a deployment based on the deployment definition
parameters supplied by the operator (the installed version of the code is stored on
Appendix B-2