; RAM disposition ; ; Because this glue code also serves stage0 which needs HERE to start right ; after the code, we have a peculiar RAM setup here: it lives at the very end ; of the address space, just under RS_ADDR at 0xf000 ; Warning: The offsets of native dict entries must be exactly the same between ; glue0.asm and glue1.asm .equ RAMSTART 0xe800 .equ HERE 0xe700 ; override, in sync with stage1.c .equ CURRENT 0xe702 ; override, in sync with stage1.c .equ HERE_INITIAL CODE_END ; override .inc "ascii.h" .equ STDIO_PORT 0x00 jp init .equ STDIO_RAMSTART RAMSTART .equ STDIO_GETC emulGetC .equ STDIO_PUTC emulPutC .inc "stdio.asm" .equ FORTH_RAMSTART STDIO_RAMEND .inc "forth.asm" init: di ; setup stack ld sp, 0xffff call forthMain halt emulGetC: ; Blocks until a char is returned in a, (STDIO_PORT) cp a ; ensure Z ret emulPutC: out (STDIO_PORT), a ret .dw 0 ; placeholder used in glue1. CODE_END: .out $ ; should be the same as in glue1