0x8000 CONSTANT RAMSTART
0xff00 CONSTANT RS_ADDR        0xfffa CONSTANT PS_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
212 LOAD  ( z80 assembler )
262 LOAD  ( xcomp )            270 LOAD  ( xcomp overrides )
282 LOAD  ( boot.z80 )         393 LOAD  ( xcomp core low )
582 LOAD  ( acia )
420 LOAD  ( xcomp core high )
(entry) _
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PC ORG @ 8 + !
," : _ ACIA$ RDLN$ (ok) ; _ "