Editing Minimig RTC

Idea would be to have a clock that keeps the time over power cycling.<br>
[http://amigahardware.mariomisic.de/cgi-bin/showhardware_en.cgi?HARDID=968 Commodore: A501, 512k + RTC]<br>
[http://amigahardware.mariomisic.de/cgi-bin/showhardware_en.cgi?HARDID=1683 Micronik: Realtime Clock for Clockport, RTC]<br>
::[[Minimig Board v1.0 MCU connections|MCU pins]]
::[[Minimig Board v1.0 FPGA connections|FPGA pins]]
@@ Line 1: / Line 1: @@
-Real time clock that keeps the time over power cycling.<br>
+Idea would be to have a clock that keeps the time over power cycling.<br>
-Advantages:
+[http://amigahardware.mariomisic.de/cgi-bin/showhardware_en.cgi?HARDID=968 Commodore: A501, 512k + RTC]<br>
-:* Disc files get correct date
-:* Any software dependent on date will work correctly (astronomy/satellite?)
-[http://amigahardware.mariomisic.de/cgi-bin/showhardware_en.cgi?HARDID=968 Commodore: A501 Rev5, 512k + RTC]<br>
-:RAM organised as 16 x (Sanyo LM33256G-12 DIP16) 1 x 256kbit Dynamic RAM
-:RTC 5 Volt "OKI M6242B" U9 DIP18 clocked with a 32768 Hz crystal, backed up by a 3,6V NiCd battery
-<!-- amigahardware.mariomisic.de/download_photos/a501_1_big.jpg -->
-:[http://www.tranzistoare.ro/datasheets2/18/182008_1.pdf M6242B datasheet]
-:Register table:<!-- http://en.wikipedia.org/wiki/Help:Table#Positioning -->
-:{| class="wikitable"
-|-
-! rowspan=2 colspan=1 align="center" | Address Input
-! rowspan=2 colspan=1 align="center" | Register name
-! rowspan=1 colspan=4 align="center" | Data
-! rowspan=2 colspan=1 align="center" | Count value
-! rowspan=2 colspan=1 align="center" | Description
-|-
-!         D3  !! D2    !! D1   !! D0
-|-
-| align="center"| 0 || S1   || S8  || S4    || S2   || S1   || 0-9 ||  1-second digit register
-|-
-| align="center"|1 || S10  || *   || S40   || S20  || S10  || 0-5 || 10-second digit register
-|-
-| align="center"|2 || MI1  || mi8 || mi4   || mi2  || mi1  || 0-9 ||  1-minute digit register
-|-
-| align="center"| 3 || MI10 || *   || mi40  || mi20 || mi10 || 0-5 || 10-minute digit register
-|-
-| align="center"| 4 || H1   || h8  || h4    || h2   || h1   || 0-9 ||  1-hour digit register
-|-
-| align="center"| 5 || H10  || *   || PM/AM || h20  || h10  || 0-2 or 0-1 || PM/AM 10-hour digit register
-|-
-| align="center"| 6 || D1   || d8  || d4    || d2   || d1   || 0-9 ||  1-day digit register
-|-
-| align="center"| 7 || D10  || *   || *     || d20  || d10  || 0-3 || 10-day digit register
-|-
-| align="center"| 8 || MO1  || mo8 || mo4   || mo2  || mo1  || 0-9 ||  1-month digit register
-|-
-| align="center"| 9 || MO10 || *   || *     || *    || MO10 || 0-1 || 10-month digit register
-|-
-| align="center"| A || Y1   || y8  || y4    || y2   || y1   || 0-9 ||  1-year digit register
-|-
-| align="center"| B || Y10  || y80 || y40   || y20  || y10  || 0-9 || 10-year digit register
-|-
-| align="center"| C || W    || *   || w4    || w2   || w1   || 0-6 || Week register (0=Sunday)
-|-
-| align="center"| D || CD   ||  30 sec. ADJ || IRQ FLAG || BUSY || HOLD || -   || Control Register D
-|-
-| align="center"| E || CE   || t1  || t0    || ITRPT /STND || MASK || -   || Control Register E
-|-
-| align="center"| F || CF   || TEST|| 24/12 || STOP || REST || -   || Control Register F
-|}
-:REST = RESET
-:ITRPT/STND = INTERRUPT/STANDARD
-:
-:<B>Note 1)</B> Bit * does not exist (unrecognized during a write and held at "0" during a read).
-:<B>Note 2)</B> Be sure to mask the AM/PM bit when processing 10's of hour's data.
-:<B>Note 3)</B> BUSY bit is read only. The IRQ FLAG bit can only be set to a "0". Setting the IRQ FLAG to a "1" is done by hardware.
-:<B>Note 4)</B> PM at 1 and AM at 0 for PM / AM bit.
 [http://amigahardware.mariomisic.de/cgi-bin/showhardware_en.cgi?HARDID=1683 Micronik: Realtime Clock for Clockport, RTC]<br>
+::[[Minimig Board v1.0 MCU connections|MCU pins]]
-Pin maps:
+::[[Minimig Board v1.0 FPGA connections|FPGA pins]]
-:[[Minimig Board v1.0 MCU connections|MCU pins]]
-:[[Minimig Board v1.0 FPGA connections|FPGA pins]]