Full featured 37k RAM expansions, with gold plated edge connector, reset button and full DIP switch controls.
Features:
- RAM expansion in BLK 1,2,3 and 5 areas with read-only mode on switch
- 3k RAM expansion area ($0400-$0FFF)
- IO2 and IO3 areas
- Master enable/disable switch
- Uses only new components - no NOS parts
- Full RoHS compliant boards and components
- Full schematics available
Pricing is 20 Euros or 24.50$US
DIP switches functions:
1- BLK1 RAM enable ($2000-$3FFF)
2- BLK2 RAM enable ($4000-$5FFF)
3- BLK3 RAM enable ($6000-$7FFF)
4- BLK5 RAM enable ($A000-$BFFF)
5- BLK 1,2,3 and 5 read-only/normal
6- BLK 1,2,3,5 enable
7- IO2,3 RAM enable ($9800-$9FFF)
8- 3k RAM enable ($0400-$0FFF)
Yes, there is a battery holder but this feature is untested at this point and not included at the above price.
For sale: 37k RAM expanders with gold plated connectors
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- Radical Brad
- Vic 20 Devotee
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Re: For sale: 37k RAM expanders with gold plated connectors
Nice looking board!
May I ask which PCB house you use?
I will be looking to make a few boards for various projects.
Brad
May I ask which PCB house you use?
I will be looking to make a few boards for various projects.
Brad
Re: For sale: 37k RAM expanders with gold plated connectors
Good idea making the grounds a bit longer.
“In religion and politics people’s beliefs and convictions are in almost every case gotten at second-hand, and without examination... whose opinions about them were not worth a brass farthing.”
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- eslapion
- ultimate expander
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Re: For sale: 37k RAM expanders with gold plated connectors
This is a small batch (prototypes). In small quantities, OshPark is the least expensive.Radical Brad wrote:Nice looking board!
May I ask which PCB house you use?
Production units may look different.
This is Fredric's idea actually.norm8332 wrote:Good idea making the grounds a bit longer.
Be normal.
Re: For sale: 37k RAM expanders with gold plated connectors
hi
how order ??
cheers
Laurent
how order ??
cheers
Laurent
- cbmeeks
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Re: For sale: 37k RAM expanders with gold plated connectors
Not by a country mile.eslapion wrote:In small quantities, OshPark is the least expensive.
Try JLCPCB.
Cat; the other white meat.
- eslapion
- ultimate expander
- Posts: 5458
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Re: For sale: 37k RAM expanders with gold plated connectors
Looks like they have good deals. Thanks for the tip!cbmeeks wrote:Not by a country mile.eslapion wrote:In small quantities, OshPark is the least expensive.
Try JLCPCB.
Be normal.