diff --git a/avrdude/avrdude.1 b/avrdude/avrdude.1
index 842bc7f7..2d34d0c2 100644
--- a/avrdude/avrdude.1
+++ b/avrdude/avrdude.1
@@ -134,6 +134,7 @@ t15 ATtiny15
1200 AT90S1200
2313 AT90S2313
2333 AT90S2333
+2343 AT90S2343 (*)
4414 AT90S4414
4433 AT90S4433
4434 AT90S4434
@@ -145,6 +146,10 @@ m103 ATMEGA103
m16 ATMEGA16
m8 ATMEGA8
.TE
+.Bl -tag -width "(*) "
+.It "(*)"
+The AT90S2323 uses the same algorithm.
+.El
.It Fl c Ar programmer-id
Use the pin configuration specified by the argument. Pin
configurations are read from the config file (see the
diff --git a/avrdude/avrdude.conf.sample b/avrdude/avrdude.conf.sample
index 4b6cedd2..695a3e66 100644
--- a/avrdude/avrdude.conf.sample
+++ b/avrdude/avrdude.conf.sample
@@ -604,6 +604,87 @@ part
;
;
+
+#------------------------------------------------------------
+# AT90s2343
+#------------------------------------------------------------
+
+part
+ id = "2343";
+ desc = "AT90S2343";
+ chip_erase_delay = 18000;
+ pgm_enable = "1 0 1 0 1 1 0 0 0 1 0 1 0 0 1 1",
+ "x x x x x x x x x x x x x x x x";
+
+ chip_erase = "1 0 1 0 1 1 0 0 1 0 0 x x x x x",
+ "x x x x x x x x x x x x x x x x";
+
+ memory "eeprom"
+ size = 128;
+ min_write_delay = 9000;
+ max_write_delay = 20000;
+ readback_p1 = 0x00;
+ readback_p2 = 0xff;
+ read = "1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0",
+ "x a6 a5 a4 a3 a2 a1 a0 o o o o o o o o";
+
+ write = "1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0",
+ "x a6 a5 a4 a3 a2 a1 a0 i i i i i i i i";
+ ;
+ memory "flash"
+ size = 2048;
+ min_write_delay = 9000;
+ max_write_delay = 20000;
+ readback_p1 = 0xff;
+ readback_p2 = 0x00;
+ read_lo = " 0 0 1 0 0 0 0 0",
+ " x x x x x x a9 a8",
+ " a7 a6 a5 a4 a3 a2 a1 a0",
+ " o o o o o o o o";
+
+ read_hi = " 0 0 1 0 1 0 0 0",
+ " x x x x x x a9 a8",
+ " a7 a6 a5 a4 a3 a2 a1 a0",
+ " o o o o o o o o";
+
+ write_lo = " 0 1 0 0 0 0 0 0",
+ " x x x x x x a9 a8",
+ " a7 a6 a5 a4 a3 a2 a1 a0",
+ " i i i i i i i i";
+
+ write_hi = " 0 1 0 0 1 0 0 0",
+ " x x x x x x a9 a8",
+ " a7 a6 a5 a4 a3 a2 a1 a0",
+ " i i i i i i i i";
+ ;
+ memory "signature"
+ size = 3;
+ read = "0 0 1 1 0 0 0 0 x x x x x x x x",
+ "x x x x x x a1 a0 o o o o o o o o";
+ ;
+ memory "fuse"
+ size = 1;
+ min_write_delay = 9000;
+ max_write_delay = 20000;
+ read = "0 1 0 1 1 0 0 0 x x x x x x x x",
+ "x x x x x x x x o o o x x x x o";
+
+ write = "1 0 1 0 1 1 0 0 1 0 1 1 1 1 1 i",
+ "x x x x x x x x x x x x x x x x";
+ ;
+ memory "lock"
+ size = 1;
+ min_write_delay = 9000;
+ max_write_delay = 20000;
+ read = "0 1 0 1 1 0 0 0 x x x x x x x x",
+ "x x x x x x x x o o o x x x x o";
+
+ write = "1 0 1 0 1 1 0 0 1 1 1 1 1 i i 1",
+ "x x x x x x x x x x x x x x x x";
+ ;
+ ;
+
+
#------------------------------------------------------------
# AT90s4433
#------------------------------------------------------------