212 LOAD        ( z80a )
0x8000 CONSTANT RAMSTART
0xf000 CONSTANT RS_ADDR
0x80   CONSTANT ACIA_CTL
0x81   CONSTANT ACIA_IO
4      CONSTANT SDC_SPI
5      CONSTANT SDC_CSLOW
6      CONSTANT SDC_CSHIGH
RAMSTART 0x70 + CONSTANT ACIA_MEM