2020-04-22 21:19:12 -04:00
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Z80 boot code
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This assembles the boot binary. It requires the Z80 assembler
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2020-05-11 21:08:24 -04:00
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(B200) and cross compilation setup (B260). It also requires
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these constants to be set:
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2020-04-22 21:19:12 -04:00
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2020-05-11 21:08:24 -04:00
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RAMSTART: beginning address of RAM. This is where system
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variables are placed. HERE is then placed at RAM+80 (ref B80).
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2020-04-22 21:19:12 -04:00
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2020-05-11 21:08:24 -04:00
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RS_ADDR: to be set to the bottom address of the Return Stack.
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2020-04-22 21:19:12 -04:00
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2020-05-11 21:08:24 -04:00
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PS_ADDR: top address of the Parameter stack (PS grows down-
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wards). Allow space for stack underflow protection (B76).
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(cont.)
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