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93 lines
3.4 KiB
Markdown
93 lines
3.4 KiB
Markdown
[< back to index](../doc_index.md)
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# Frequently Asked Questions
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### Who is the target audience?
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Millfork was designed to be a language for developers for old 8-bit platforms,
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mostly game developers, who have little use for advanced features of C, but don't have time to write assembly.
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### What was the inspiration?
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The main inspirations was Atalan, but also Quetzalcoatl, Batari BASIC and NESHLA.
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Sadly, Atalan has been abandoned and the compiler has been left in a non-working state.
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The goal of Millfork is to succeed where Atalan failed.
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### What platforms are supported?
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Large programs in Millfork have been developed for Commodore 64.
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Millfork was also tested (via emulators) to run trivial programs on other 8-bit Commodore computers,
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Atari 8-bit computers, Apple II, BBC Micro, ZX Spectrum 48k, NEC PC-88, MSX, CP/M, NES, Game Boy, Atari 2600 and MS-DOS.
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Support for other devices using supported processors can be easily added, usually without modifying the compiler.
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### What microprocessors are supported?
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* MOS 6502 and its descendants: 6510, 65C02, Ricoh 2A03, and to a lesser degree CSG 65CE02, Hudson Soft HuC6280 and WDC 65816. 6509 is not supported and will not be.
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* Intel 8080, Intel 8085, Zilog Z80, Sharp LR35902 (also known as GBZ80)
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* There is also partial experimental support for Intel 8086, via automatic 8080-to-8086 translation.
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The generated code is very large and very slow.
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* Support for Motorola 6809 is coming in the future.
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### Why Millfork when I can use assembly?
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* Assembly will not be portable. If you want to target both 6502 and Z80, you'd have to maintain two separate codebases.
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* Millfork is more productive. The programmer doesn't have to worry about register allocation or variable sizes.
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### Why Millfork when I can use C?
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* Millfork is usually a bit faster.
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* No runtime, so it's easier to create small programs.
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* Many features usually found in advanced assemblers but rarely found in high-level languages are also available in Millfork,
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like hygienic macros, binary file inclusion, explicit memory layout, formulaic array initialization.
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* Millfork handles text encodings more carefully.
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* A wide variety of integer types of almost arbitrary sizes.
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* Semantics designed to suit 8-bit microprocessors, so usually less explicit casting is required.
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* Low-level things like the carry after arithmetic operations or single bytes of larger variables.
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* Built-in decimal arithmetic support.
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* Easy interfacing with assembly.
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### This sounds like Millfork beats C in every department, right?
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Unfortunately not:
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* Millfork is very picky. It avoids compiling complex expressions, especially those involving larger variables.
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* Integer math support is not very complete.
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* Floating point math support is absent.
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* Pointer arithmetic is very limited.
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* Millfork preprocessor is less powerful than C preprocessor.
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* There is no support for linking with external libraries not written in Millfork.
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You either need to rewrite foreign assembly into Millfork assembly syntax,
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or generate a static binary and link it manually using the `file` directive.
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Since the compiler is a work-in-progress, some of the mentioned issues might be improved upon in the future.
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### Why is it called Millfork?
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It stands for **MI**ddle **L**evel **L**anguage **FOR** **K**ommodore computers.
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(There's also a mining town in Utah called Mill Fork, which, as fitting a compiler for obsolete machines, is currently abandoned.)
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### ‟Commodore” isn't spelt with K!
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Shh.
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