Start terminal driver

2023-11-28 23:52:27 -08:00
parent e73d8db74c
commit 5b6a4e1442
2 changed files with 54 additions and 0 deletions
--- a/sw/kernel/devices/terminal.s
+++ b/sw/kernel/devices/terminal.s
@@ -0,0 +1,41 @@
+.MACPACK generic
+
+.autoimport
+
+.export _terminal_read, _terminal_write, _terminal_open, _terminal_close
+
+.data
+
+terminal_buf: .res 128
+
+.code
+
+.proc _terminal_read
+
+.endproc
+
+.proc _terminal_write
+
+.endproc
+
+; terminal_open
+; open terminal device
+; Inputs: uint8_t* filename
+; Outputs: none
+; Return Value: 0 on success
+; Function: none.
+.proc _terminal_open
+    lda #$0
+    rts
+.endproc
+
+; terminal_close
+; close terminal device
+; Inputs: int32_t fd
+; Outputs: none
+; Return Value: 0 on success (but this always failes)
+; Function: none.
+.proc _terminal_close
+    lda #$ff    ; -1
+    rts
+.endproc