How to create Dual boot Kickstart for A600 - Page 4

e5frog · 08 June 2010, 18:18

I could use something else than KS1.2 in my lowest slot - that KS1.3 with IDE support would be very nice to try out.

When using a DIP-switch

You need to be able to swap the signal between a 1 (5V) and 0 (GND) with only one circuit breaker that has two poles - you can either have it open (OFF) or closed (ON).

This is done by connecting a resistor from the 5V line and the other end of the resistor to one of the two poles of the the DIP-switch (there are usually more than two poles on a DIP-switch as they usually come packed as 2, 4, 8 in a single package) but this is for one of those switches.

You connect your signal that you want to control on that same leg on the DIP-switch as the resistor is attached to - you have now connected it to 1 (high, 5V) through a current limiting resistor.

The other pin on the DIP-switch is connected to GND so when you close the DIP-switch (circuit breaker) you tie GND to your signal and a small current starts flowing through the resistor from the 5V to GND. The resistor prevents a short circuit that could blow fuses, circuit board traces or other such things.

The Voltage where your signal is picked up is now 0 - voltage drops from 5V to 0V over the resistor.

You get a current of 0,5 mA if you use a 10kOhm resistor, that's what I usually use - a larger resistor for less current (loss) is probably possible, you can adjust it to how much current the eprom needs at the most on it's input. More kOhm means less current.

Inputs are usually high impedance (resistance) though so even these old circuits won't need much current I think we're talking about µA (mikro A) here...

If you want to know exactly you have to check the datasheets of the exact manufacturer that made the exact circuit that you have - which is usually easy to find with Google.

This is the type of circuit I used:
http://www.chipsinfo.com/STMicroelec...7C160-50F1.htm
This is a good site.

In this we can read that in Read Mode (that's how we use it)
Input Leakage Current is Max +-1 µA ...

So - I'm guessing - if we use this circuit and less than 5M Ohm that should work. Just try it, 1M Ohm could be OK, drawing only 5µA instead when set to 0.

mfilos edited ascii-picture:

Code:

[ DIP Pin1  ]--------+---[10k]-----[ +5V  ]
                     |        
                     +-------------[ 27C800  Kickstart's Pin1 (signal for switching) ]

[ DIP Pin2  ]----------------------[ GND ]

Open (OFF): Signal 1 (upper memory area)

5V ----[10k]----- Signal____/ ___GND

Closed (ON): Signal 0 (lower memory area)

5V ----[10k]------Signal------- GND

When using a larger circuit you connect the other addresspins the same way and can swap every signal individually.

You could add a circuit to swap kickstarts automatically upon reset or similar, just connect the control signal of your choice and use a toggle-circuit that changes the output between 0 and 1.

In my NES I installed a circuit that reads the controller and resets the NES on a certain key combination, you could do all sorts of things - like adding diodes that lights up when you move joystick in a certain direction and so on and so on - digital electronics is wonderful.

I use the same type of bank switching in my Fairchild Channel F Multi-Cart - but the latching (that's what setting the addresspins is called) is done by a circuit that's loaded with a value from the databus.

26 June 2010, 00:11

hello

I made my kickstart mod a some time ago , but i dont have time to make a post and foto . it works great !! i am really hapy about it .

this is a highres foto of my A600 final config

and HighRes foto :

http://img80.imageshack.us/img80/922/img7031r.jpg

kipper2k · 26 June 2010, 01:07

nice

rkauer · 26 June 2010, 06:28

@AVErsiv: excellent work on the A600, buddy!

danko · 13 April 2012, 18:41

Hi,is possible create kickstart 1.3+2.05 for A600?

mfilos · 13 April 2012, 20:31

ofc it is

Arnie · 14 April 2012, 02:14

Even kickstart 1.3+2.05+3.1 is possible

mfilos · 14 April 2012, 09:28

It is... I can't understand what the benefit would be to keep both an 2.05 and a 3.1 though

If you can put an 3.1, then 2.05 is obsolete imho.

Arnie · 14 April 2012, 11:22

I use it to boot a different OS.

I have a quad kickstart installed but, I'm scratching my head as to how to switch all 4 with one switch.

cpiac64 · 14 April 2012, 11:51

1.3 is ok on a600 for compatibilty with old game and soft like xcopy
3.1 is ok for large hd

Jope · 16 April 2012, 11:51

Quote:

Originally Posted by Arnie

I use it to boot a different OS.

I have a quad kickstart installed but, I'm scratching my head as to how to switch all 4 with one switch.

Use an octal switch such as the ones in external SCSI enclosures.

Arnie · 16 April 2012, 18:55

Hi Jope,

What's an 'octal switch' ?

Jope · 17 April 2012, 09:12

It's a multi position switch that outputs the numbers 0-7 in binary.

Some are rotary (twist to select), and some have + and - buttons and a window where you can see what number it's set to.

e5frog · 10 August 2013, 22:05

I don't think I ever got hold of that 1.3 with A600 IDE support, I remember looking and reading the description but I didn't manage to do as it was described.

I have original 1.3, 2.x and also 3.1 Kickstarts in my computers, I don't think it would be immoral if... <snip - prowler>

prowler · 10 August 2013, 22:13

Maybe not immoral, but you're breaking the EAB rules by actively pursuing such things.

e5frog · 11 August 2013, 21:15

I noticed, sorry for not remembering or refreshing on the rules every now and then. I'll just leave the Amiga in the closet.

However, links to patch it myself is still allowed, are there any working ones? I found one and you have to get this program and to run that you need that program and then another, I gave up after the fourth link to a new needed software.
I have already dumped the roms I have on my possession several times I just need a way to fuse them. Pick that part from one, put it with the other.

danko · 15 September 2013, 17:00

Cancel

danko · 29 August 2015, 20:32

@kipper2k your Wellon VP-380 need a adapter for burn 27C400 and 27C800? or burn directly socket programmer?

Arnie · 30 August 2015, 03:19

Quote:

Originally Posted by danko

@kipper2k your Wellon VP-380 need a adapter for burn 27C400 and 27C800? or burn directly socket programmer?

I have a VP380 and I can tell you that you need no adapters. It supports 42 pin eeproms.

danko · 30 August 2015, 08:25

Quote:

Originally Posted by Arnie

I have a VP380 and I can tell you that you need no adapters. It supports 42 pin eeproms.

Thanks, i have a True-USB PRO GQ-4X Programmer and need a 16 Bit EPROM 40/42 pin ZIF adapter,i can just buy the new Wellon VP390.
Regards

08 June 2010, 18:18	#61
e5frog The Headstrong Join Date: May 2010 Location: Älvängen / Sweden Age: 49 Posts: 273	I could use something else than KS1.2 in my lowest slot - that KS1.3 with IDE support would be very nice to try out. When using a DIP-switch You need to be able to swap the signal between a 1 (5V) and 0 (GND) with only one circuit breaker that has two poles - you can either have it open (OFF) or closed (ON). This is done by connecting a resistor from the 5V line and the other end of the resistor to one of the two poles of the the DIP-switch (there are usually more than two poles on a DIP-switch as they usually come packed as 2, 4, 8 in a single package) but this is for one of those switches. You connect your signal that you want to control on that same leg on the DIP-switch as the resistor is attached to - you have now connected it to 1 (high, 5V) through a current limiting resistor. The other pin on the DIP-switch is connected to GND so when you close the DIP-switch (circuit breaker) you tie GND to your signal and a small current starts flowing through the resistor from the 5V to GND. The resistor prevents a short circuit that could blow fuses, circuit board traces or other such things. The Voltage where your signal is picked up is now 0 - voltage drops from 5V to 0V over the resistor. You get a current of 0,5 mA if you use a 10kOhm resistor, that's what I usually use - a larger resistor for less current (loss) is probably possible, you can adjust it to how much current the eprom needs at the most on it's input. More kOhm means less current. Inputs are usually high impedance (resistance) though so even these old circuits won't need much current I think we're talking about µA (mikro A) here... If you want to know exactly you have to check the datasheets of the exact manufacturer that made the exact circuit that you have - which is usually easy to find with Google. This is the type of circuit I used: http://www.chipsinfo.com/STMicroelec...7C160-50F1.htm This is a good site. In this we can read that in Read Mode (that's how we use it) Input Leakage Current is Max +-1 µA ... So - I'm guessing - if we use this circuit and less than 5M Ohm that should work. Just try it, 1M Ohm could be OK, drawing only 5µA instead when set to 0. mfilos edited ascii-picture: Code: [ DIP Pin1 ]--------+---[10k]-----[ +5V ] \| +-------------[ 27C800 Kickstart's Pin1 (signal for switching) ] [ DIP Pin2 ]----------------------[ GND ] Open (OFF): Signal 1 (upper memory area) 5V ----[10k]----- Signal____/ ___GND Closed (ON): Signal 0 (lower memory area) 5V ----[10k]------Signal------- GND When using a larger circuit you connect the other addresspins the same way and can swap every signal individually. You could add a circuit to swap kickstarts automatically upon reset or similar, just connect the control signal of your choice and use a toggle-circuit that changes the output between 0 and 1. In my NES I installed a circuit that reads the controller and resets the NES on a certain key combination, you could do all sorts of things - like adding diodes that lights up when you move joystick in a certain direction and so on and so on - digital electronics is wonderful. I use the same type of bank switching in my Fairchild Channel F Multi-Cart - but the latching (that's what setting the addresspins is called) is done by a circuit that's loaded with a value from the databus. Last edited by e5frog; 08 June 2010 at 18:27.

10 August 2013, 22:05	#74
e5frog The Headstrong Join Date: May 2010 Location: Älvängen / Sweden Age: 49 Posts: 273	I don't think I ever got hold of that 1.3 with A600 IDE support, I remember looking and reading the description but I didn't manage to do as it was described. I have original 1.3, 2.x and also 3.1 Kickstarts in my computers, I don't think it would be immoral if... <snip - prowler> Last edited by prowler; 10 August 2013 at 22:11.

15 September 2013, 17:00	#77
danko Registered User Join Date: Oct 2009 Location: Italy Age: 45 Posts: 196	Cancel Last edited by danko; 29 August 2015 at 20:33.

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26 June 2010, 00:11	#62
AVErsiv Posts: n/a	hello I made my kickstart mod a some time ago , but i dont have time to make a post and foto . it works great !! i am really hapy about it . this is a highres foto of my A600 final config and HighRes foto : http://img80.imageshack.us/img80/922/img7031r.jpg

26 June 2010, 01:07	#63
kipper2k Registered User Join Date: Sep 2006 Location: Thunder Bay, Canada Posts: 4,323	nice

26 June 2010, 06:28	#64
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	@AVErsiv: excellent work on the A600, buddy!

13 April 2012, 18:41	#65
danko Registered User Join Date: Oct 2009 Location: Italy Age: 45 Posts: 196	Hi,is possible create kickstart 1.3+2.05 for A600?

13 April 2012, 20:31	#66
mfilos Paranoid Amigoid Join Date: Mar 2008 Location: Athens/Greece Age: 45 Posts: 1,978	ofc it is

14 April 2012, 02:14	#67
Arnie R.I.P Smudge 18-08-16 Join Date: Aug 2005 Location: Leicester/UK Age: 66 Posts: 3,968	Even kickstart 1.3+2.05+3.1 is possible

14 April 2012, 09:28	#68
mfilos Paranoid Amigoid Join Date: Mar 2008 Location: Athens/Greece Age: 45 Posts: 1,978	It is... I can't understand what the benefit would be to keep both an 2.05 and a 3.1 though If you can put an 3.1, then 2.05 is obsolete imho.

14 April 2012, 11:22	#69
Arnie R.I.P Smudge 18-08-16 Join Date: Aug 2005 Location: Leicester/UK Age: 66 Posts: 3,968	I use it to boot a different OS. I have a quad kickstart installed but, I'm scratching my head as to how to switch all 4 with one switch.

14 April 2012, 11:51	#70
cpiac64 Registered User Join Date: Apr 2010 Location: Italy Posts: 1,136	1.3 is ok on a600 for compatibilty with old game and soft like xcopy 3.1 is ok for large hd

16 April 2012, 18:55	#72
Arnie R.I.P Smudge 18-08-16 Join Date: Aug 2005 Location: Leicester/UK Age: 66 Posts: 3,968	Hi Jope, What's an 'octal switch' ?

17 April 2012, 09:12	#73
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,861	It's a multi position switch that outputs the numbers 0-7 in binary. Some are rotary (twist to select), and some have + and - buttons and a window where you can see what number it's set to.

10 August 2013, 22:13	#75
prowler Global Moderator Join Date: Aug 2008 Location: Sidcup, England Posts: 10,300	Maybe not immoral, but you're breaking the EAB rules by actively pursuing such things.

11 August 2013, 21:15	#76
e5frog The Headstrong Join Date: May 2010 Location: Älvängen / Sweden Age: 49 Posts: 273	I noticed, sorry for not remembering or refreshing on the rules every now and then. I'll just leave the Amiga in the closet. However, links to patch it myself is still allowed, are there any working ones? I found one and you have to get this program and to run that you need that program and then another, I gave up after the fourth link to a new needed software. I have already dumped the roms I have on my possession several times I just need a way to fuse them. Pick that part from one, put it with the other.

29 August 2015, 20:32	#78
danko Registered User Join Date: Oct 2009 Location: Italy Age: 45 Posts: 196	@kipper2k your Wellon VP-380 need a adapter for burn 27C400 and 27C800? or burn directly socket programmer?

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