Update README.md

Addition of A18 pin
Add files via upload
2024-02-27 22:21:33 +00:00 · 2024-02-27 22:19:03 +00:00 · 2024-02-27 22:18:48 +00:00 · 2024-02-27 22:17:23 +00:00 · 2024-02-27 22:16:50 +00:00 · 2024-02-27 22:13:12 +00:00
13 changed files with 603 additions and 608 deletions
--- a/Gerbers/Macintosh-SE-Reloaded-v1.5a-release.zip
+++ b/Gerbers/Macintosh-SE-Reloaded-v1.5a-release.zip
--- a/Gerbers/Macintosh-SE-Reloaded-v1.6-release.zip
+++ b/Gerbers/Macintosh-SE-Reloaded-v1.6-release.zip
--- a/Gerbers/MacintoshSE.drl
+++ b/Gerbers/MacintoshSE.drl
@ -143,6 +143,8 @@ X187320Y133980
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@ -355,12 +357,11 @@ X110010Y140020
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@ -1207,6 +1208,7 @@ X206530Y143030
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@ -1712,9 +1714,9 @@ X174620Y18730
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--- a/Gerbers/MacintoshSE_copper_bottom.gbr
+++ b/Gerbers/MacintoshSE_copper_bottom.gbr
@ -4367,13 +4367,13 @@ D03*
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--- a/Gerbers/MacintoshSE_copper_inner1.gbr
+++ b/Gerbers/MacintoshSE_copper_inner1.gbr
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--- a/Gerbers/MacintoshSE_copper_inner2.gbr
+++ b/Gerbers/MacintoshSE_copper_inner2.gbr
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--- a/Gerbers/MacintoshSE_copper_top.gbr
+++ b/Gerbers/MacintoshSE_copper_top.gbr
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--- a/Gerbers/MacintoshSE_silkscreen_bottom.gbr
+++ b/Gerbers/MacintoshSE_silkscreen_bottom.gbr
--- a/Gerbers/MacintoshSE_silkscreen_top.gbr
+++ b/Gerbers/MacintoshSE_silkscreen_top.gbr
@ -19,6 +19,7 @@ G01*
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 M02*
--- a/Gerbers/MacintoshSE_soldermask_bottom.gbr
+++ b/Gerbers/MacintoshSE_soldermask_bottom.gbr
@ -3838,13 +3838,13 @@ D03*
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--- a/Gerbers/MacintoshSE_soldermask_top.gbr
+++ b/Gerbers/MacintoshSE_soldermask_top.gbr
@ -3838,13 +3838,13 @@ D03*
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 M02*
--- a/MacintoshSE.lay6
+++ b/MacintoshSE.lay6
--- a/README.md
+++ b/README.md
@ -3,6 +3,8 @@
 ![Finished Logic Board](/macseboard-final-rev15-release.jpg)
 ![Finished Logic Board - Bottom](/macseboard-final-rev15-release-rear.jpg)

+**Latest version, v1.6 adds an A18 address pin next to UE1, a 74F257 to allow for potential ROM upgrades as the standard ROM sockets only allow A1 to A17 address lines.**
+
 So many classic macs, starting with the SE, have died because of Apple's short sighted decision to add a battery to the board. This inevitably leaks and causes a horrific amount of damage. Luckily - most of the custom chips survive even this, so I decided to make a near 1:1 reproduction of the board, using Sprint Layout v6.0

 Project inspired by Rob 'Peepo' Taylors work on the A500++ and the SixtyClone PCB's, which in turn were inspired by John 'Chucky' Hertell. 
@ -33,7 +35,7 @@ https://recapamac.com.au/shop/
 * **AM26LS32's** - Available new, but still worth reclaiming
 * **MC3488A** - NLA - replace with Texas Instruments SN75150
 * **Rockwell 338-6523** - This is identical to the 65C22N VIA, still available new
-* **RTC Chip** - Custom Chip - maybe possible to clone using pin-compatible ATTiny85
+* **RTC Chip** - Custom Chip - this has been reverse engineered, see project here: https://github.com/pgreenland/attinyrtcmodule
 * **ADB Chip** - Apple branded PIC16CR54 - maybe possible to re-produce/clone
 * **GLU Chip** - Apple branded HAL16L8 - this has been reverse engineered for both GAL16V8 and discrete logic!
 * **BBU Chip** - Custom Chip
Author	SHA1	Message	Date
Kai Robinson	3e5ea4c56b	Update README.md Addition of A18 pin	2024-02-27 22:21:33 +00:00
Kai Robinson	33b9361d49	Add files via upload	2024-02-27 22:19:03 +00:00
Kai Robinson	f63b4bb08d	Delete Gerbers/Macintosh-SE-Reloaded-v1.5a-release.zip Inbound new version	2024-02-27 22:18:48 +00:00
Kai Robinson	5c746abff5	Add files via upload	2024-02-27 22:17:23 +00:00
Kai Robinson	36c6245e78	Add files via upload	2024-02-27 22:16:50 +00:00
Kai Robinson	dc10c0a71f	Delete MacintoshSE.lay6 New Revision Inbound	2024-02-27 22:13:12 +00:00