Platform Radio86 - marinus-lab/z88dk GitHub Wiki

Hardware summary

  • К580ВМ80А @1.77Mhz
  • Upto 32k RAM
  • 2k firmware ROM

Classic library support (+radio86)

  • Native console output
  • Native console input
  • ANSI vt100 engine
  • Generic console
    • Redefinable font
    • UDG support
    • Paper colour
    • Ink colour
    • Inverse attribute
    • Bold attribute
    • Underline attribute
  • Lores graphics
  • Hires graphics
  • PSG sound
  • One bit sound
  • Inkey driver
  • Hardware joystick
  • File I/O
  • Interrupts
  • RS232

Compilation

zcc +radio86 world.c -create-app

This will create a .rkr file suitable for loading into Emu80.

Mame usage

Mame requires a slightly different file format, so programs need to be compiled with an option indicating so:

zcc +radio86 world.c -create-app -subtype=mame

To load into Mame issue the following commands:

I
G0000

Library facilities

The Radio86 was a build-at-home computer and such there's a large number of variants with different configurations. As a result, the z88dk port uses the firmware to interact with the hardware. This has the following limitations:

  • Keypresses beep
  • Printing is slower than it should be for a character mapped display
  • The software cursors cannot be disabled
  • Scrolling occurs when the bottom right hand corner is printed in

Graphics

The default Radio86 character set provides 15 of the 16 characters needed to provide a 2x2 semi-graphics grid: the missing character is probably masked by the "beep" character code. As a result only very lores graphics (64x24) is supported and the display is substandard due to the inter-row display gap.

Links