Mini-Mig Bill of Materials

[whiteb]

Okay guys, Dennis has ALTERED the BOM on us once again (I don't know why).

The MAX232A/SO16 has now been changed to SP3232EUCN.  Which Digikey online search does not yield results.  But no fear, I found a replacement :crazy:

Lets see how long it takes you guys to find it.

[whiteb]

Oh Fairy Snuff. (Fair Enough).

Thats about what I am paying through an Online Distributor (Not Digikey). (About AU$1.50).

[whiteb]

Oh and by the way, I have made "inquiries"  into obtaining those three FPGA's from Digikey without the 120 Bulk order.

We shall see.

[whiteb]

Yeah but you have to buy a pack of 10 from Farnell, I have found Digikey's One only price version.

CP-102AH-ND (0.49 each), no minimum.  How much do Farnell want for a pack of 10 ? (I run my Farnell in AUD) $17.80 for a pack of 10, $1.78 each.  What are you going to do with 10 ?

DIGIKEY do not have the SP3232, Farnell do. (9386955)

Hope dennis is checking the bom list from a to z because i have now the MAX232A/SO16's and de DC-Cons taking up space on my desk (darn)

Why do you think I held off.  Thats why I am *NOW* building my order lists with the companies.

[whiteb]

wizard66 wrote:
Mebay you can point me to the right bav99 on farnell it's a puzzel to me ?

Then get them from Digikey, 13c each  BAV99FSCT-ND

[whiteb]

HEY, just a thought.

What is the maximum storage MMC cards (The actual storage) for Minimig, I think the Pic is programmed for Fat16 right, so 2GIG or 4GIG ?

2 GIG should be *PLENTY* of storage for ADF's to keep people occupied for a while.  Isnt Fat16 file limitations 8.3, and 512 entries ?

[whiteb]

Guys, Digikey 122-1519-ND for the FPGA are back in stock, with 200 in store.

Lets see if us Amiga people can clean them out.  I just been chatting with them on their Webchat about it.

[whiteb]

Just a side track, has anyone got a fully compiled Minimig core ?

Dennis only has the Source on his website, which means it needs to be Compiled.

Same goes for Pic Controller Firmware.

Dennis said he would put them up on his Website, but I guess he is a bit busy at the moment.

Power, have we worked out the power requirements ? I know it is 5V But whats the Max current 1A ? (or something like that ?) I know that if it draws 500ma, then a 1A powerpack will be fine, i do not just want to UNDER SUPPLY the thing.

I want to make sure I have at least a variable Powerpack to get mine up and running.

[edit] I also noticed from the Schematic, that according to the LM1117 datasheet, they recommend a 10uF Capacitor on the Voltage input SOurce, but Dennis has a 100uF, my thought is by having a Capacitor that is 10 times the capacitance, he *REALLY* wants to eliminate noise on the board. (Which I can understand, Given that the chipset timings would be SEVERELY hampered by any noise.)

[whiteb]

Oh right, so thats the file that the Microprogrammer uses to flash the FPGA right, because I cannot make any sense out of Xilinx ISE 9.2 software.  And i got a 2.1Ghz dual core.

And the Pic Firmware, I tried Hi-Tech Picc lite, but it appears to only support 16 series Pic's not Series 18.

[whiteb]

Alrighty, so I am back to Hoping Dennis is not to busy to upload a pre-compiled version some time soon then

Care to share your compiled core ??

[whiteb]

You can email it to me or use a Free file share site, like Rapidshare.

I found a DEMO C compiler, that supports 18f252, but not 18LF252.  I test ran the compiler and its complaining about not finding hardware.h, which is not in the archive, yet main.c refrences to it.  See this is why i did not learn C

[whiteb]

This is only temporary until Dennis posts the Core and compiled PIC code on his site.

I would compile the core myself, if I actually knew what the Frag I was doing with the Xilinx software.

[whiteb]

Somehow I have messed up my order.

My 15 pin (For VGA) is *NOT* a HIGH DENSITY.............

Its a normal density.

HIGH DENSITY is P/N 107-5303 (Farnell).

[whiteb]

CRIKEY !!!!!!!!!!!!.

Digikey must be wondering what the rush is on them .

[whiteb]

EL121 wrote:
Hi!

I`ve got a question: From the bill of material:

6     RES_0805/1%    2K2            R7
                                   
1     RES_0805/1%    2.2K           R54

What`s the difference between 2K2 and 2.2K? Isn`t it the same?

Aye Laddy.  BOTH 2k2 and 2.2k are equally 2200R

[whiteb]

Well, if Dennis says to use a 16V electrolytic then if you used a 25V in the place, then this is fine.  Just means you have more of a head room.

If you used a 5V capacitor in a circuit that needs a 16v, you pop the cap *VERY* quickly.

Some of the capacitors I have here are 50v.

Just do not have the boards.