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The PicoBlaze-Library

The PicoBlaze-Library L_PicoBlaze contains hardware modules as well as assembler routines.

Main Features of the Hardware Components:

• auxiliary packages
  • PicoBlaze related constants, records and types
  • Functions to define a generic PortID to register mapping
  • Functions for semi-automated bus wiring
  • Functions to write debug information for simulators and ChipScope to disk
• Core system:
  • A generic address decoder with a registered write path
  • A interrupt controller with 32 ports and per device error message handling
  • TODO: Timer
• Accelerators:
  • Multiplier
  • Divider
  • ...
• I/O devices for:
  • GPIO
  • LCD
  • Bit-Banging IO
  • ...
• I/O adapters for:
  • Xilinx Dynamic Reconfiguration Port (DRP)
  • ...

Main Features of the Software Stack:

• Core system
  • predefined register names and calling conventions
  • ROM switching, if multiple ROM pages are used (up to 32k instructions)
• Libraries:
  • Stack functions: push, pop, top, ...
  • Delay functions: sleep from nanoseconds to seconds
  • Co-routines (lightweight threads)
• I/O routines to communicate with the hardware modules:
  • I²C
  • SPI
  • OneWire (OW)
  • LCD
  • UART
• Device routines implement special protocols like:
  • Terminal
  • PCA9548 (I²C switch)
  • SI570 (external, programmable clock source)
  • 7-Series GTX transceiver