RE: Toeprom: eprom programmer

2001-06-07 Thread Hans Otten

I suppose the previous owner (or owner before the previous owner) modified
the unit itself.

I managed to open the case (I remeber vaquely that Toeproms were not cased?)
and am reengineering the modifications.
All jumpers are wired to the EPROM connector, so it is possible to find out
what the jumpers imply. 
It is surely for 27512 support.

When i know why and how I will report here, thanks for the replies.

-Original Message-
From: Maarten ter Huurne [mailto:[EMAIL PROTECTED]]
Sent: Thursday, June 07, 2001 00:57
To: [EMAIL PROTECTED]
Subject: Re: Toeprom: eprom programmer


On Wednesday 06 June 2001 19:47, you wrote:

 There are four jumpers on the top marked 27512, 32 etc.

 Does anyone know what the function and settings of these jumpers are?

I have a Toeprom as well, but mine doesn't have any jumpers. Probably there 
are different versions.

Bye,
Maarten
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Re: Toeprom: eprom programmer

2001-06-07 Thread Gerrit van den Berg

-Oorspronkelijk bericht-
Van: Hans Otten [EMAIL PROTECTED]
Aan: [EMAIL PROTECTED] [EMAIL PROTECTED]
Datum: woensdag 6 juni 2001 21:44
Onderwerp: Toeprom: eprom programmer

Hello Hans,

I have bought secondhand a Toeprom eprom programmer.
Looks nice, not so good and not uptodate manual.

Not a high quality program inside, but I have the MAD/Dick van Vlodrop
version (including sources) on disk. (will come to
www.geocities.com./msxhans, mail me if you want it now)

Jeremy Wiermans released a new program for TOEPROM, called 2EPROM. It can
handle 2764, 8 kB, 27128, 16 kB and 27256, 32 kB EPROM´s. 2EPROM is much
better as the software that was supplied with the hardware and it´s Public
Domain. This program is reviewed in MSX-Info Blad 14. You can contact the
publisher of MSX-Info Blad, Rinus Stoker, to receive this program. Jeremy
maybe wants to adapt his program for 27512 and EEPROMS.

But here my question:
There are four jumpers on the top marked 27512, 32 etc.
Does anyone know what the function and settings of these jumpers are?

27512 is a 64 kB EPROM, 27256 is a 32 kB EPROM. It´s also possible these
jumpers are used to determine the ´programmeervoltage´, like 5.0, 12.5, 21.0
and/or 25.0V. 2EPROM can do all the work for you and determines the best
usable EPROM and `programmeervoltage`. I hope this info is to your help.

Greets,

Gerrit van den Berg
MSX-Info Blad

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RE: Toeprom: eprom programmer

2001-06-07 Thread Hans Otten

Thanks!

-Original Message-
From: Gerrit van den Berg [mailto:[EMAIL PROTECTED]]
Sent: 07 June 2001 19:05
To: [EMAIL PROTECTED]
Subject: Re: Toeprom: eprom programmer


-Oorspronkelijk bericht-
Van: Hans Otten [EMAIL PROTECTED]
Aan: [EMAIL PROTECTED] [EMAIL PROTECTED]
Datum: woensdag 6 juni 2001 21:44
Onderwerp: Toeprom: eprom programmer

Hello Hans,

I have bought secondhand a Toeprom eprom programmer.
Looks nice, not so good and not uptodate manual.

Not a high quality program inside, but I have the MAD/Dick van Vlodrop
version (including sources) on disk. (will come to
www.geocities.com./msxhans, mail me if you want it now)

Jeremy Wiermans released a new program for TOEPROM, called 2EPROM. It can
handle 2764, 8 kB, 27128, 16 kB and 27256, 32 kB EPROM´s. 2EPROM is much
better as the software that was supplied with the hardware and it´s Public
Domain. This program is reviewed in MSX-Info Blad 14. You can contact the
publisher of MSX-Info Blad, Rinus Stoker, to receive this program. Jeremy
maybe wants to adapt his program for 27512 and EEPROMS.

But here my question:
There are four jumpers on the top marked 27512, 32 etc.
Does anyone know what the function and settings of these jumpers are?

27512 is a 64 kB EPROM, 27256 is a 32 kB EPROM. It´s also possible these
jumpers are used to determine the ´programmeervoltage´, like 5.0, 12.5, 21.0
and/or 25.0V. 2EPROM can do all the work for you and determines the best
usable EPROM and `programmeervoltage`. I hope this info is to your help.

Greets,

Gerrit van den Berg
MSX-Info Blad

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Toeprom: eprom programmer

2001-06-06 Thread Hans Otten

Hi,

I have bought secondhand a Toeprom eprom programmer.
Looks nice, not so good and not uptodate manual.

Not a high quality program inside, but I have the MAD/Dick van Vlodrop
version (including sources) on disk. (will come to
www.geocities.com./msxhans, mail me if you want it now)

But here my question:

There are four jumpers on the top marked 27512, 32 etc.

Does anyone know what the function and settings of these jumpers are?

Other tips?

Hans  
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Re: Toeprom: eprom programmer

2001-06-06 Thread Marco Antonio Simon dal Poz

On Wed, 6 Jun 2001, Hans Otten wrote:

[... eprom programmer ...]
 But here my question:
 There are four jumpers on the top marked 27512, 32 etc.
 Does anyone know what the function and settings of these jumpers are?

To me, it seems to be an eprom selection. You should connect the jumper in
the right position according to the eprom which you are programming.

Greetings from Brazil!

---
Marco Antonio Simon Dal Poz   Dal Poz Motorsport!
[EMAIL PROTECTED]   http://www.lsi.usp.br/~mdalpoz

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