update 5/9/25 v1

Author: thecodingchicken

_posts/2020-01-03-future-stuff-to-fix-or-add.md

@@ -10,4 +10,8 @@
 ---
 
 ### Thoughts for the future
-- Use enamel wire to display contents of all registers?
+- Use enamel wire to display contents of all registers?
+
+
+### Some very useful links
+[1](http://www.aholme.co.uk/Links.htm)

_posts/2020-01-04-current-stock.md

@@ -0,0 +1,43 @@
+
+
+
+
+Part#     MPN      Description      Ship date      Qty      Unit      List Price      Discount %      Net Price      Total Price      NCNR
+909134 74HC377N IC,Positive Edg 4/30/25 20 EA $0.49 5.0% $0.47 $9.31
+46084 SN74HC574N IC,74HC574N,DIP 4/30/25 20 EA $0.42 5.0% $0.40 $7.98
+45330 74HC138 IC,74HC138N,DIP 4/30/25 10 EA $0.79 5.0% $0.75 $7.51
+45209 74HC04 IC,74HC04,DIP-1 4/30/25 20 EA $0.49 5.0% $0.47 $9.31
+45356 74HC139 IC,74HC139,DUAL 4/30/25 10 EA $0.65 5.0% $0.62 $6.18
+45671 74HC245 IC,74HC245N,DIP 4/30/25 30 EA $0.79 5.0% $0.75 $22.52
+45401 74HC154EN IC,74HC154N,,4- 4/30/25 5 EA $4.95 5.0% $4.70 $23.51
+2303943 ATMEGA328P-PU IC,ATMega328P-P 4/30/25 4 EA $3.69 5.0% $3.51 $14.02
+691024 CF1/4W472JRC @RES,CF,4.7K OH 4/30/25 100 EA $0.02 5.0% $0.02 $1.52
+690865 CF1/4W102JRC @RES,CF,1K OHM, 4/30/25 200 EA $0.02 5.0% $0.02 $3.04
+93833 R1000/25 CAP, RADIAL,100 4/30/25 2 EA $0.39 5.0% $0.37 $0.74
+30496 R220/25 CAP,RADIAL,220u 4/30/25 10 EA $0.15 5.0% $0.14 $1.43
+2317887 22MAG-1/2LB WIRE,MAGNET,22A 4/30/25 1 EA $15.95 5.0% $15.15 $15.15
+119423 2N7000 TRANSISTOR,2N70 4/30/25 20 EA $0.25 5.0% $0.24 $4.75
+36038 1N4148 @DIODE,SWITCH,1 4/30/25 100 EA $0.02 5.0% $0.02 $1.81
+27861 MXO45-3C-1M0000-JVP CRY,OSC,HCMOS/T 4/30/25 1 EA $1.95 5.0% $1.85 $1.85
+13151 CD4060BE IC,CD4060,DIP-1 4/30/25 2 EA $0.65 5.0% $0.62 $1.24
+45891 74HC4017 IC,74HC4017N,DI 4/30/25 5 EA $0.85 5.0% $0.81 $4.04
+
+
+PART#   MPN   DESCRIPTION   SHIP DATE   QTY UNIT    LIST PRICE    DISCOUNT %    NET PRICE    TOTAL PRICE
+2293711 BB1660 BREADBOARD, SOL 4/21/25 25 EA $12.95 5.0% $12.30 $307.56
+2294887 DR15-M1-01 BREAKOUT,DB15 F 4/21/25 1 EA $5.95 5.0% $5.65 $5.65
+46818 74LS161 IC,74LS161N,DIP 4/21/25 10 EA $0.59 5.0% $0.56 $5.61
+46316 SN74LS04N IC,74LS04N,DIP- 4/21/25 10 EA $0.59 5.0% $0.56 $5.61
+47458 74LS30 IC,74LS30N,DIP- 4/21/25 10 EA $0.69 5.0% $0.66 $6.56
+46252 SN74LS00N IC,74LS00,DIP-1 4/21/25 3 EA $0.75 5.0% $0.71 $2.14
+45031 74HCT245 IC,74HCT245N,DI 4/21/25 10 EA $0.75 5.0% $0.71 $7.13
+44901 74HCT08 IC,74HCT08N,DIP 4/21/25 10 EA $0.79 5.0% $0.75 $7.51
+698576 MAX232N DUAL EIA-232 DR 4/21/25 1 EA $2.79 5.0% $2.65 $2.65
+102613 CY1.8432 CRY,1.8432MHz,5 4/21/25 1 EA $0.65 5.0% $0.62 $0.62
+27422 NE555P IC,NE555P,TIMER 4/21/25 20 EA $0.22 5.0% $0.21 $4.18
+46375 SN74LS08N IC,74LS08N,DIP- 4/21/25 10 EA $0.65 5.0% $0.62 $6.18
+47466 SN74LS32N IC,74LS32N,DIP- 4/21/25 10 EA $0.59 5.0% $0.56 $5.61
+2295423 HY-1602Y LCD,16x2,4/8 BI 4/21/25 1 EA $4.49 5.0% $4.27 $4.27
+45161 74HC00 IC,74HC00, DIP- 4/21/25 5 EA $0.59 5.0% $0.56 $2.80
+2154880 782201 VI005
+-JVP

_posts/2025-05-09-register-changes.md

@@ -0,0 +1,13 @@
+## Register and Control line changes.  
+
+I decided to swap the 74hc138's for a [74hc154](https://www.jameco.com/Jameco/Products/ProdDS/45401.pdf) 4-to-16 line decoder.  This will allow me to save even more control lines when building it out.  I'll likely have two eeproms, or maybe 3, but this will allow the control of 2x 16 functions.  With the current setup, one of them is for reads, and the other is for writes to the bus.  As I can't have more than one write(or read for the most part) active, I think it'll work.  
+If, for some weird reason, I need to have a command that can READ into multiple registers/devices at the same time, that can be done with diodes to prevent backfeed into some other device.  But I don't think that'll be necessary as of right now.  
+
+So, I have the space for 9 free inputs and 9 free outputs.  Pretty nice.  
+
+
+### Some other stuff
+I haven't had much time to work on it the past few days, but I finally have some time.  My alu's arrived today...at the hotel...and I'm home.  So, I guess I'll have to wait till next week to work on those.  I need to get digikey to change the shipping address for my stuff to send it to home instead of the hotel, the shipping date is a couple weeks in the future and I don't know if I'll still be there.  
+I'll probably finish the clock module today.  As of right now, I'm going with that modified clock from the [reddit post](add link here), but I also want to add a high speed(perhaps 1MHz) clock as well for actual processing.  A end goal of this computer would be something that I can telnet into FROM THE STINKING INTERNET!!!!!  The ability to connect to a computer that ***I*** built would be so sweet.  Or perhaps a chat program, that'd also be neat.  But that's a very very long term goal.  But I want something like [this](https://www.magic-1.org/)
+
+Some other useful links when I eventually get there.  [1](https://github.com/drh/lcc) [2](https://minix1.woodhull.com/) [3](https://thecodingchicken.com/chips/computer%20design/A%20Retargetable%20C%20Compiler%20Design%20and%20Implementation%20(Christopher%20W.%20Fraser%20David%20R.%20Hanson)%20(z-lib.org).pdf) [4](http://www.aholme.co.uk/Mk1/Architecture.htm) [5](http://www.aholme.co.uk/Links.htm)