Author
| Ademir Carchano Mini-Slot Expander jumpers
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kliis
msx novice
Posts: 29 |  Posted: October 01 2007, 22:56 |
I have a 4 slot expander from Ademir Carchano (Mini expansor de slot AC03315) that I bought on a fair some years ago. It came with no manual, only the expander and a nice blue bag. I've been using it with no problems but I always wondered what jumpers JP4 and JP5 are for. I know the blue buttons are used to enable/disable an individual slot, but I don't know about the jumpers. They have 3 pins each one, so it has two possibilities. I’ve been searching it on internet with no luck.  Anyone knows? 
The expander I'm talking about is this one:
Bigger resolution:
personales.ya.com/marcus/imatges/slot.jpg
Thank you! |
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djh1697
msx professional
Posts: 551 | Posted: October 01 2007, 23:52 |
I can't remember the configuration, but, moving the jumpers allows you to use a MegaRAM and SCC in the same expended slot.
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Sd-Snatcher
msx freak
Posts: 255 | Posted: October 02 2007, 01:01 |
> Alguém poderia explicar como funcionam os "jumpers" >existentes no Mini
> Expansor de Slots by Ademir Carchano?
JP1 e JP2
AB = 1 CI 74LS133
BC = 2 CIs 74LS30
JP3
Ligado = 5V dos conectores vem do micro
Desligado = 5V dos conectores vem do conector CN6
JP4
0 => Pino 4 Conector CN3 = SLTX0
1 => Pino 4 Conector CN3 = SLTX1
JP5
2 => Pino 4 Conector CN5 = SLTX2
3 => Pino 4 Conector CN5 = SLTX3
JP4 e JP5 são usados para ligar o SCC junto com a Megaram.
Chaves:
CH1 - Liga/Desliga sinal SLTX0 do conector CN2
CH2 - Liga/Desliga sinal SLTX1 do conector CN3
CH3 - Liga/Desliga sinal SLTX2 do conector CN4
CH4 - Liga/Desliga sinal SLTX3 do conector CN5
LD1 - Aceso direto = CN2 desligado
- Piscando = sinal SLTX0 atuando
LD2 - Aceso direto = CN3 desligado
- Piscando = sinal SLTX1 atuando
LD3 - Aceso direto = CN4 desligado
- Piscando = sinal SLTX2 atuando
LD4 - Aceso direto = CN5 desligado
- Piscando = sinal SLTX3 atuando
[]Ademir
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SLotman
online
msx professional
Posts: 544 | Posted: October 02 2007, 01:18 |
...bip...bip... translating, please stand by... ...bip...bip...
JP1 and JP2
AB = 1 IC 74LS133
BC = 2 ICs 74LS30
JP3
On = 5V from machine connectors
OFF = 5V from connectors come from CN6 connector
JP4
0 => Pin 4 Connector CN3 = SLTX0
1 => Pin 4 Connector CN3 = SLTX1
JP5
2 => Pin 4 Connector CN5 = SLTX2
3 => Pin 4 Connector CN5 = SLTX3
JP4 and JP5 enable the use of SCC together with Megaram.
Keys:
CH1 - On/Off SLTX0 signal from connector CN2
CH2 - On/Off SLTX1 signal from connector CN3
CH3 - On/Off SLTX2 signal from connector CN4
CH4 - On/Off SLTX3 signal from connector CN5
LD1 - Direct access = CN2 off
- blinking = SLTX0 signal acting
LD2 - Direct access = CN3 off
- blinking = SLTX1 signal acting
LD3 - Direct access = CN4 off
- blinking = SLTX2 signal acting
LD4 - Direct access = CN5 off
- blinking = SLTX3 signal acting
...bip...bip... end of translation *EOF*
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kliis
msx novice
Posts: 29 | Posted: October 02 2007, 22:28 |
So it has no use for me as I don't have a Megaram! 
Anyway, thank you very much! |
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Sd-Snatcher
msx freak
Posts: 255 | Posted: October 03 2007, 00:35 |
You can change the slot without unplug.
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kliis
msx novice
Posts: 29 | Posted: October 03 2007, 12:08 |
Yep, that's true. I never thought of that! Anyway it mekes me a bit of fear to insert/remove a cartridge without powering off  |
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wolf_
msx legend
Posts: 4781 | Posted: October 03 2007, 12:24 |
Quote:
| Anyway it mekes me a bit of fear to insert/remove a cartridge without powering off
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> ahum!  |
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Ivan
msx professional
Posts: 908 | Posted: February 07 2008, 23:32 |
Just spotted one Mini-slot expander at eBay:
link
Get it now! |
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