1 files changed, 22 insertions, 0 deletions
diff --git a/src/net.asm b/src/net.asm
index 939b975..f2c4279 100644
--- a/src/net.asm
+++ b/src/net.asm
@@ -39,3 +39,25 @@ sys_srecv::
 .got
     ld a, [rSB]
     ret
+
+; sys_srecv_nb() -> A = byte, CF set if none available (non-blocking).
+sys_srecv_nb::
+    ld a, $80
+    ld [rSC], a
+    ld a, [rSC]
+    bit 7, a
+    jr z, .got
+    scf
+    ret
+.got
+    ld a, [rSB]
+    and a                       ; CF = 0 (got a byte)
+    ret
+
+; sys_pollin() -> A = char typed on the OSK this poll, or 0 if none.
+sys_pollin::
+    call pad_poll
+    call osk_handle             ; CF set + A = char if a key was pressed
+    ret c
+    xor a
+    ret