Compiler — sccz80

Binary: z88dk-sccz80 (normally via zcc). Source: src/sccz80/.

Agent facts

Topic	Detail
Default	Many classic targets use sccz80
Peephole	z88dk-copt + lib/z80rules.* on compiler output only
Runtime	libsrc/l/sccz80/ per CPU (5-z80, 7-8085, 8-8080, …)
Inline ints	May load z80rules.8 — see tool-copt
Float rewrite	sccz80 may rewrite 1.0f/x → inv(x); force runtime numerator to hit fsdiv

Condensed wiki

Tool — z88dk-sccz80

Native C compiler. Normally invoked through zcc, not directly.

When to use direct invocation

Rare. Prefer zcc +target …. Use the binary directly only when debugging the compiler front end.

Select via zcc

Default for most classic CLIBs and for -clib=new. See Compilers.

Help

Small-C/Plus - z80 Crosscompiler   Version: 25141-6b30e0885e-20260716
(C) 1980-2025 Cain, Van Zandt, Hendrix, Yorston, z88dk
Usage: z88dk-sccz80 [flags] [file]
   -v -verbose                  Be verbose
   -h -help                     Show this help page
   -o -output                   Set the output filename

CPU Targetting:
      -m8080                    Generate output for the i8080
      -m8085                    Generate output for the i8085
      -mez80_z80                Generate output for the ez80 in z80 mode
      -mz80                     Generate output for the z80
      -mz80n                    Generate output for the z80n
      -mz180                    Generate output for the z180
      -mr2ka                    Generate output for the Rabbit 2000A
      -mr3k                     Generate output for the Rabbit 3000
      -mr4k                     Generate output for the Rabbit 4000
      -mr6k                     Generate output for the Rabbit 4000
      -mgbz80                   Generate output for the Gameboy CPU
      -mkc160                   Generate output for the KC160

Code generation options
      -unsigned                 Make all types unsigned
      --disable-builtins        Disable builtin functions
      -params-offset            =<num> Base offset for the function parameters (default: 2)
      -doublestr                Store FP constants as strings
      -math-z88                 (deprecated) Make FP constants match z88
      -banked-style=regular     Use regular banked calling style
      -banked-style=ti          Use ticalc banked calling style
      -fp-exponent-bias         =<num> FP exponent bias (default: 128)
      -fp-mantissa-size         =<num> FP mantissa size (default: 5 bytes)
      -fp-mode=z80              Use 48 bit doubles
      -fp-mode=ieee             Use 32 bit IEEE doubles
      -fp-mode=mbf32            Use 32 bit Microsoft Binary format
      -fp-mode=mbf40            Use 40 bit Microsoft binary format
      -fp-mode=mbf64            Use 64 bit Microsoft binary format
      -fp-mode=z88              Use 40 bit z88 doubles
      -fp-mode=am9511           Use 32 bit AM9511 doubles
      -noaltreg                 Try not to use the alternative register set
      -standard-escape-chars    Use standard mappings for \r and \n
      -set-r2l-by-default       Use r->l calling convention by default
      --constseg                =<name> Set the const section name
      --codeseg                 =<name> Set the code section name
      --bssseg                  =<name> Set the bss section name
      --dataseg                 =<name> Set the data section name
      --

… (more in wiki page)


## Related

- `tool-copt`, `tool-zcc`, `library-classic`, `cpu-8085`