85 lines
2.9 KiB
Markdown
85 lines
2.9 KiB
Markdown
6502
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====
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The cpu/6502/ directory is used for targeting 6502-based machines using the
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cc65 compiler [http://cc65.github.io/cc65/](http://cc65.github.io/cc65/).
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The Contiki network configuration for 6502-based targets is loaded from a
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binary configuration file (by default named contiki.cfg). It has the following
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format:
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- Bytes 1 - 4: IP Address (HiByte first)
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- Bytes 5 - 8: Subnet Mask (HiByte first)
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- Bytes 9 - 12: Default Router (HiByte first)
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- Bytes 13 - 16: DNS Server (HiByte first)
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- Bytes 17 - 18: Ethernet card I/O address (LoByte first !)
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- Bytes 19 - xx: Ethernet card driver name (ASCII / PETSCII)
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An online Contiki configuration file generator is available at two sites:
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- [http://www.a2retrosystems.com/contiki.html](http://www.a2retrosystems.com/contiki.html)
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- [http://contiki.cbm8bit.com](http://contiki.cbm8bit.com)
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The build for 6502-based machines includes the 'disk' make goal which creates a
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bootable floppy disk image containing the project binary, a sample
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configuration file and the Ethernet card drivers.
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The build for 6502-based machines supports so-called high-level configuration
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macros which allow to customize Contiki on a per-project basis. They are set in
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form of a comma-separated list as value of the make variable DEFINES on the
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make command line. The value of DEFINES can be saved with the 'savedefines'
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make goal. The values of the high-level configuration macros are not tracked by
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the build so a manual rebuild is necessary on any change. The following
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high-level configuration macros may be set:
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- MTU_SIZE
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- Default: 1500
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- Purpose: Set the Maximum Transfer Unit size.
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- CONNECTIONS
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- Default: 10
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- Purpose: Set the maximum number of concurrent TCP connections.
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- ETHERNET
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- Default: N/A
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- Purpose: Link Ethernet driver statically instead of loading it dynamically
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using the network configuration file.
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- WITH_LOGGING
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- Default: 0
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- Purpose: Have log_message() and UIP_LOG() write messages to the screen.
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- WITH_BOOST
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- Default: 0
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- Purpose: Significantly improve troughput on sending full sized packets by
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splitting them thus workarounding the "delayed acknowledge".
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- WITH_FORWARDING
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- Default: 0
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- Purpose: Enable support for the 'IP forwarding' packet driver.
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- WITH_CLIENT
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- Default: 0
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- Purpose: Enable support for outgoing TCP connections.
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- WITH_DNS
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- Default: 0
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- Purpose: Enable UDP support and initialize resolver process on startup.
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- WITH_GUI
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- Default: 0
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- Purpose: Initialize the the CTK process on startup.
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- WITH_MOUSE
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- Default: 0
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- Purpose: Enable CTK mouse support and load a mouse driver.
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- WITH_ARGS
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- Default: 0
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- Purpose: Enable support for contiki_argc / contiki_argv.
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- WITH_PFS
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- Default: 0
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- Purpose: Implement the CFS interface with a Platform-specific File System
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instead of the POSIX file system.
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