update CPE schematics to cover C/P lines

schematics/cpe/cpe_comb_addf2.kicad_sch

@@ -3597,7 +3597,7 @@
 		)
 		(uuid "2781b8f5-c8d3-41fc-ac95-dfe5197e0ec5")
 	)
-	(text "C_FUNCTION = 2: ADDF2\n\nThis provides a 2-bit full adder.\n\nThe addition is performed in propagate/generate style.\n\nC_FUNCTION = 3: MULT\n\nThis provides a 2x2-bit Booth multiplier.\n\nThe dedicated logic performs multiplication by B[1], while\nmultiplication by B[0] is performed within the soft logic.\n\n(These functions differ by how they set up the downstream\ncarry and propagation lines; from this part of the logic\nthey function identically, thus have been grouped together)"
+	(text "C_FUNCTION = 2: ADDF2\n\nThis provides a 2-bit full adder.\n\nThe addition is performed in propagate/generate style.\n\nSetting C_HORIZ configures the adder to propagate carries\nhorizontally, rather than vertically. This feature isn't\nimplemented in p_r or nextpnr because horizontal carries\nhave twice the propagation delay of vertical carries.\n\nC_FUNCTION = 3: MULT\n\nThis provides a 2x2-bit Booth multiplier.\n\nThe dedicated logic performs multiplication by B[1], while\nmultiplication by B[0] is performed within the soft logic.\n\n(These functions differ by how they set up the downstream\ncarry and propagation lines; from this part of the logic\nthey function identically, thus have been grouped together)"
 		(exclude_from_sim no)
 		(at 76.2 177.8 0)
 		(effects

schematics/cpe/peppercorn.kicad_sym

@@ -4547,7 +4547,7 @@
 		(symbol "NOT_0_1"
 			(polyline
 				(pts
-					(xy 2.54 0) (xy -2.54 2.54) (xy -2.54 -2.54) (xy 2.54 0)
+					(xy 1.27 0) (xy -1.27 1.143) (xy -1.27 -1.143) (xy 1.27 0)
 				)
 				(stroke
 					(width 0)
@@ -4560,7 +4560,7 @@
 		)
 		(symbol "NOT_1_1"
 			(pin input line
-				(at -5.08 0 0)
+				(at -3.81 0 0)
 				(length 2.54)
 				(name ""
 					(effects
@@ -4578,7 +4578,7 @@
 				)
 			)
 			(pin output inverted
-				(at 5.08 0 180)
+				(at 3.81 0 180)
 				(length 2.54)
 				(name ""
 					(effects

schematics/cpe/prjpeppercorn.kicad_pro

@@ -597,7 +597,7 @@
     },
     "net_format_name": "",
     "page_layout_descr_file": "",
-    "plot_directory": "",
+    "plot_directory": "//wsl$/Arch/home/lofty/prjpeppercorn/schematics/cpe/",
     "space_save_all_events": true,
     "spice_current_sheet_as_root": false,
     "spice_external_command": "spice \"%I\"",