- #Protel 99se outline zip file#
- #Protel 99se outline upgrade#
- #Protel 99se outline plus#
- #Protel 99se outline zip#
The only difference between them is that pin 5 (address 9) is not used on the 256K by 4Mbit chip. The 256K by 4Mbit chips used on the 1M SIMM module and the 1M by 4Mbit chips used on the 4M SIMM module both come in the same 20/26 SOJ package. If anybody is interested this is the same board you would use for a 1M SIMM module. You can rename the file extension to whatever your board house needs to identify it as a board outline layer. GM4 for gerber mechanical layer 4 (which is where the outline is in the project).
#Protel 99se outline zip#
Protel 99SE uses mechanical layers for board outlines so in the ZIP you'll see a new gerber file with the file extension.
#Protel 99se outline zip file#
I cooked up a new batch of gerber files that now have a separate board outline file and attached them in the ZIP file with the name "GVP Compatible 4MB 64-Pin SIMM Rev A - Sep Outline.zip" for "Separate Outline". Thanks for bringing this issue to our attention. Alas, the A530 only uses 1M and 4M SIMMs so I had to roll my - I've only run into a few board houses that required a separate board outline during my career so I don't think much about it much. I'm glad this work is - Yep, I did see tbtorro's work while I was initialing researching. I've been testing without them and all is working well but their there for piece of mind. I rather have them and not need them, then need them and not have them. I added a 1/16" to the board height and placed pads for 0402 bypass capacitors. This was common for the time, not just with GVP, to save every penny.
The original SIMMs did not have any bypass/coupling capacitors. Normally, SOJ packages are fairly straight-forward as far as SMT parts go for hand placement, but since they are packed together closely on the board that added a little more difficulty. I freely release this information out into the wild in the hopes that others will find it helpful. The attached ZIP file contains the schematic, gerbers, and a README with specifications and information.
#Protel 99se outline plus#
I ordered 5 at $14.64 a piece plus shipping. Unfortunately those are the expensive pieces when orders in low quantity. The boards were ordered from a PCB manufacture that I use for production and prototype boards. They are pulls but came in good shape and appear to be fully operational. I got the memory chips from Syracuse Semiconductors ( ) via their eBay page ( ) for $2.50 a piece plus shipping. Ran some graphic animation programs and VR studio stuff to really exercise them with no issues. Ran a battery of tests on them (checkerboard, walking ones, walking zeros, etc.) and everything passed. Not only did it power on but booted in half the time with more fast RAM to use. If something went wrong its not like I can just go and buy another A530 at the store. So using Janin's work as a starting point and also using the 1M SIMM that originally came with my A530 I set off to work building my own.Įven though I triple and quadruple checked everything I was fairly amped up when I applied power. After reading that I thought to myself "I'm a EE with my own home lab, I can make these". I found this work ( ) from Pascal Janin from the 90s which I'm sure a lot of you know. And much like others I found GVP-M ( ) less than helpful. After lots of searching on this board, and others, I found that getting the GVP 64-pin SIMMs these days was fairly difficult.
#Protel 99se outline upgrade#
Had my Amiga 500 with GVP A530 accelerator out lately and wanted to upgrade to a full 8M of RAM. I've been an Amiga user, and overall Commodore user, since the 80's and this is my first post to this board so I hope everybody finds it helpful.
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