Crate mif

Memory Initialization File

Features

• Native MIF representation as Vec<(word: T, bulk: usize)>.
• Detects single-word sequence [first..last]: word but does not detect multi-word sequence [first..last]: words.. in binary data.
• Verifies word fits into MIF's word width in bits.
• Joins multiple MIFs of different word widths as long as words fit.
• Optionally comments join offsets in words with given (file) names.
• Provides simple mif dump subcommand.
• Provides reproducible mif join subcommand via TOML instruction file.

Library

MIF creation and serialization is implemented for the Mif structure.

Disable default features like cli and bin to reduce dependencies:

[dependencies]
mif = { version = "0.3", default-features = false }

Default features:

• cli: Provides command-line interface functionality of mif binary.

  Requires: anyhow, indexmap, serde, toml

• bin: Enables compilation of mif binary.

  Requires: cli, clap

Command-line Interface

Install via cargo install mif.

Provides two subcommands, dump and join.

mif 0.3.0
Rouven Spreckels <rs@qu1x.dev>
Memory Initialization File

USAGE:
    mif <SUBCOMMAND>

OPTIONS:
    -h, --help       Prints help information
    -V, --version    Prints version information

SUBCOMMANDS:
    dump    Dumps binary as MIF
    join    Joins binaries' memory areas to MIFs
    help    Prints this message or the help of the given subcommand(s)

Dump Subcommand

mif-dump
Dumps binary as MIF

USAGE:
    mif dump [input]

ARGS:
    <input>    Input file or standard input (-) [default: -]

OPTIONS:
    -w, --width <bits>       Word width in bits from 1 to 128 [default: 16]
    -f, --first <lsb|msb>    LSB/MSB first (little/big-endian) [default: lsb]
    -h, --help               Prints help information
    -V, --version            Prints version information

Join Subcommand

mif-join
Joins binaries' memory areas to MIFs

USAGE:
    mif join [OPTIONS] [toml]

ARGS:
    <toml>    TOML file or standard input (-) [default: -]

OPTIONS:
    -i, --bins <path>    Input directory [default: .]
    -o, --mifs <path>    Output directory [default: .]
    -n, --no-comments    No comments in MIFs
    -h, --help           Prints help information
    -V, --version        Prints version information

Join Example

Assuming two ROM dumps, a.rom and b.rom, whose program and data areas are concatenated as in:

• cat a.program.rom a.data.rom > a.rom
• cat b.program.rom b.data.rom > b.rom

Following TOML file defines how to join both program areas to one MIF and both data areas to another MIF, assuming 24-bit program words of depth 1267 and 1747 and 16-bit data words of depth 1024 each. Additionally, every area is dumped to its own separate MIF for verification. Then, between program and data area is supposed to be an unused area of 0xffffff words, which should be skipped. Listing them in the skips instruction will verify that this area only contains these words.

[["a.rom"]]
first = "lsb" # Least-significant byte first. Default, can be omitted.
width = 24
depth = 1267
joins = ["a.prog.mif", "ab.prog.mif"]
[["a.rom"]]
first = "lsb" # Least-significant byte first. Default, can be omitted.
width = 24
depth = 781
skips = [0xffffff] # Empty [] for skipping without verification.
[["a.rom"]]
first = "msb"
width = 16 # Default, can be omitted.
depth = 1024
joins = ["a.data.mif", "ab.data.mif"]

[["b.rom"]]
width = 24
depth = 1747
joins = ["b.prog.mif", "ab.prog.mif"]
[["b.rom"]]
width = 24
depth = 301
skips = [0xffffff]
[["b.rom"]]
depth = 1024
joins = ["b.data.mif", "ab.data.mif"]

Modules

cli	Command-line interface functionality of mif binary.

Structs

Mif	Native MIF representation.

Enums

Error	Mif errors.
First	LSB/MSB first (little/big-endian).

Functions

default_width

Default width of 16 bits.