new memory and project layout

2026-10-01 12:17:47 +02:00
parent 9b1fcac8ee
commit d19ffc70a1
10 changed files with 397 additions and 272 deletions
@@ -0,0 +1,8 @@
+; Stable assembly ABI exported by the resident BIOS at C000.
+BIOS_PUTC       = 0xC050 ; A = character; preserves all registers
+BIOS_TRY_GETC   = 0xC053 ; returns A = character or 0; preserves BC..IY
+BIOS_GETC       = 0xC056 ; blocking; returns character in A
+BIOS_IO_OUT     = 0xC059 ; A = port, L = value; preserves all registers
+BIOS_IO_IN      = 0xC05C ; A = port; returns value in A
+BIOS_DELAY_MS   = 0xC05F ; HL = milliseconds; preserves all registers
+BIOS_MONITOR    = 0xC062 ; warm-start the monitor; does not return