Merge pull request #5 from quorten/master

Add documentation on Macintosh case screws.

hardware/3d_print/SCREWS.md

@@ -0,0 +1,23 @@
+These are the specifications for the Macintosh case screws.
+
+**Compact Mac Case Top**
+* Screw, Tap, M 4.22 x 1.41* x 16, Torx, Zinc
+* Apple P/N: 426-1007
+
+NOTE: The replacement screw pitch is a more typical 1.46.  This
+doesn't affect threading at this screw's length and was a lot cheaper
+than custom tooling.
+
+**Compact Mac Case Bottom**
+* Screw, Tap, 8-32 x .625, Torx, Blk Zinc Oxide
+* Apple P/N: 435-5002
+
+See the 68kMLA forum post for further discussion.
+
+2020-12-20: https://68kmla.org/forums/topic/61607-brand-new-case-screws/
+
+Photos:
+
+![Screws](https://web.archive.org/web/20201220154324id_/https://68kmla.org/forums/uploads/monthly_2020_12/Screws.jpeg.b9173507a8f2e6566d78b126871c84d7.jpeg)
+
+![ScrewsDetail](https://web.archive.org/web/20201220154333id_/https://68kmla.org/forums/uploads/monthly_2020_12/1613560725_ScrewDetail.jpeg.672aacd6297f33cb8d90d73ce90f3b5f.jpeg)

hardware/pcb/mlb/Macintosh SE30 Main Logic Board-cache.lib

@@ -1309,11 +1309,11 @@ X 9 9 -300 -400 150 R 50 50 1 1 P
 ENDDRAW
 ENDDEF
 #
-# Macintosh_SE_30_Components_DSC
+# Macintosh_SE_30_Components_OSC
 #
-DEF Macintosh_SE_30_Components_DSC UE 0 40 Y Y 1 F N
+DEF Macintosh_SE_30_Components_OSC UE 0 40 Y Y 1 F N
 F0 "UE" 0 -100 50 H V C CNN
-F1 "Macintosh_SE_30_Components_DSC" 0 -200 50 H V C CNN
+F1 "Macintosh_SE_30_Components_OSC" 0 -200 50 H V C CNN
 F2 "" 0 0 50 H I C CNN
 F3 "" 0 0 50 H I C CNN
 DRAW

hardware/pcb/mlb/SE30 Components Library/Macintosh_SE_30_Components.lib

@@ -754,11 +754,11 @@ X 9 9 -300 -400 150 R 50 50 1 1 P
 ENDDRAW
 ENDDEF
 #
-# DSC
+# OSC
 #
-DEF DSC UE 0 40 Y Y 1 F N
+DEF OSC UE 0 40 Y Y 1 F N
 F0 "UE" 0 -100 50 H V C CNN
-F1 "DSC" 0 -200 50 H V C CNN
+F1 "OSC" 0 -200 50 H V C CNN
 F2 "" 0 0 50 H I C CNN
 F3 "" 0 0 50 H I C CNN
 DRAW

hardware/pcb/mlb/Serial Interface + Sound Interface.sch

@@ -665,11 +665,11 @@ NoConn ~ 3750 8700
 NoConn ~ 3750 7900
 NoConn ~ 3750 7800
 $Comp
-L Macintosh_SE_30_Components:DSC UE10
+L Macintosh_SE_30_Components:OSC UE10
 U 1 1 5EC30FDA
 P 3200 6950
 F 0 "UE10" H 3200 6850 50  0000 C CNN
-F 1 "DSC" H 3200 6750 50  0000 C CNN
+F 1 "OSC" H 3200 6750 50  0000 C CNN
 F 2 "" H 3200 6950 50  0001 C CNN
 F 3 "" H 3200 6950 50  0001 C CNN
 	1    3200 6950