[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: [N8VEM: 13861] Re: Question for understanding Zeta's memory structure



Hi Norbert,

Fixed -- I increased your access priviledge to “editor”

 

Please let me know if you have any additional issues.


Thanks and have a nice day!

Andrew Lynch

 

From: n8...@googlegroups.com [mailto:n8...@googlegroups.com] On Behalf Of Norbert Joppen
Sent: Saturday, June 16, 2012 2:24 AM
To: n8...@googlegroups.com
Subject: Re: [N8VEM: 13861] Re: Question for understanding Zeta's memory structure

 

Hi Wayne,

 

yes I tried but I do not have permissions.

 

There's a 'You don't have permission to change this page's folder.' in the upper right corner.

 

- Norbert

 

Sent: Saturday, June 16, 2012 8:09 AM

Subject: Re: [N8VEM: 13861] Re: Question for understanding Zeta's memory structure

 

Hi Norbert,

 

I think you should be able to edit the page yourself if you are logged in.  Have you tried that?

 

-Wayne

On Friday, June 15, 2012 10:57:16 PM UTC-7, Norbert Joppen wrote:

Hi Wayne,

 

I'm not sure if you are the person for adding me to the 'List and Board Characteristics' on the Zeta page.

 

If yes - my data are

 

Builder:                   Norbert Joppen

 

CPU Clock Speed:   Running on 20 MHz. 4, 6, 8 and 10 MHz tested.

Floppies:                 3.5" Sony MPF 920 ,only 5V needed, 720K/1.44MB.

 

PPIDE:                     Planned

 

Firmware:               RomWBW 1.5.2

 

Notes:                     PCB Version 1.3, 74LS logic except 74F139, MAX202CPE with 0.1u capacitors.

 

 

Thanks,

Norbert

 

 

 

 

 

 

 

 

 

Sent: Saturday, June 16, 2012 12:07 AM

Subject: [N8VEM: 13857] Re: Question for understanding Zeta's memory structure

 

B: is the ROM drive.  The directory listing you attached looked fine.  You will not be able to copy anything to the ROM disk because it is a read only device.  A: is the RAM drive and starts out empty.  You will be able to copy stuff there.  The RAM drive contents will only be preserved across power off if you have the battery installed.

 

-Wayne

On Friday, June 15, 2012 2:21:03 PM UTC-7, Norbert Joppen wrote:

Hi all,

 

My Zeta SBC is ready now I and would like to know, wether the capacity of the drives A0:  and B0: and their status (R/W, R/O) are correct.

 

I have a Zeta SBC board version 1.3, and ZETA Z80 SBC Boot Loader v1.5.2 (RomWBW-WWarthen-120407T0910) .

 

Is it ok that STATshows both drives to be R/W and that there are 56k free on B0: ?

 

When I try to copy a small  program (2k) to B0: then the message occurs:

 

ERROR: READ ONLY DISK (ROM)
BDOS ERR ON B: BAD SECTOR

 

Isn't B0: a RAM copy of a part of the ROM contents?

 

I have attached a screenshot for further information.

 

Thanks,

Norbert

 

 

--
You received this message because you are subscribed to the Google Groups "N8VEM" group.
To view this discussion on the web visit https://groups.google.com/d/msg/n8vem/-/qgoH-R_QAoYJ.
To post to this group, send email to n8...@googlegroups.com.
To unsubscribe from this group, send email to n8vem+un...@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/n8vem?hl=en.

--
You received this message because you are subscribed to the Google Groups "N8VEM" group.
To view this discussion on the web visit https://groups.google.com/d/msg/n8vem/-/0RWxBMknwtcJ.
To post to this group, send email to n8...@googlegroups.com.
To unsubscribe from this group, send email to n8vem+un...@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/n8vem?hl=en.

--
You received this message because you are subscribed to the Google Groups "N8VEM" group.
To post to this group, send email to n8...@googlegroups.com.
To unsubscribe from this group, send email to n8vem+un...@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/n8vem?hl=en.