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[FRAM71] Pre-Production Batch
03-15-2015, 04:56 PM (This post was last modified: 03-15-2015 05:01 PM by Hans Brueggemann.)
Post: #63
RE: [FRAM71] Pre-Production Batch
(03-15-2015 02:55 PM)Dave Frederickson Wrote:  
  1. How is a configuration cycle triggered? I know that FREEPORT and CLAIMPORT are one method, but they're not programmable.
  2. If the goal is to not have to cycle power to change configurations, then what's with step 4)?

some comments on V500:
1) on-the-fly alterations are possible for F-Block addresses only, which are then directly written into FRAM71's MMU. so, you essentially keep the configuration unaltered, but let the modules point to different F-Blocks. that's why a configuration cycle is not required (which is of course only true if there is nothing in the F-Blocks that gets referenced by the file-chain! Version 4.xx prohibits this and requires the MMU-data to be updated via a power-cycle to minimize the chance of file-chain corruption).
step 4 in my previous post suggests that you then may further change the configuration to your likings.
2) memory-sizes and -types can't be altered in this manner and still require a power-cycle in order to announce the config change to the HP-71B.

Restoring of memory contents can be tedious if you have to restore a lot of ROM images in your HP-71B. with V500, you can do a backup/restore of all FRAM contents under program control.

production batch:
folks that have pre-ordered the FRAM71 get informed separately via e-mail about the manufacturing status. as of today, material purchase is complete (so, currently not taking any orders) and i'm waiting for the manufacturer to assign a timeslot. as suggested, all production batch units will have a programming header installed. as for the 1 MByte version, i haven't decided on this yet.

hans
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Messages In This Thread
ROM Images - Dave Frederickson - 12-10-2014, 03:51 AM
IRAM vs ROM - Dave Frederickson - 12-13-2014, 06:36 PM
ROMCOPY - Dave Frederickson - 12-20-2014, 08:59 PM
[FRAM71] Bankswitching? - Hans Brueggemann - 02-07-2015, 06:55 PM
v430 beta - Dave Frederickson - 02-16-2015, 06:09 AM
RE: [FRAM71] Pre-Production Batch - cruff - 02-11-2015, 11:45 PM
v430 beta - Dave Frederickson - 02-17-2015, 05:14 AM
v430 beta - Dave Frederickson - 02-27-2015, 05:20 AM
1MByte FRAM71 - Dave Frederickson - 03-14-2015, 09:18 PM
RE: [FRAM71] Pre-Production Batch - Gene - 03-15-2015, 02:04 AM
RE: [FRAM71] Pre-Production Batch - Hans Brueggemann - 03-15-2015 04:56 PM
V501 Firmware woes - Hans Brueggemann - 04-23-2015, 07:12 PM
Eagerly awaiting mine - cruff - 04-24-2015, 12:40 AM
RE: [FRAM71] Pre-Production Batch - cruff - 04-24-2015, 12:53 PM
Received my FRAM71 today! - cruff - 04-25-2015, 07:03 PM
RE: [FRAM71] Pre-Production Batch - cruff - 04-26-2015, 12:27 PM
RE: [FRAM71] Pre-Production Batch - Erwin - 10-04-2016, 08:28 PM
MEMBUF - Dave Frederickson - 05-13-2015, 02:50 AM
FRAM71 V502 - Hans Brueggemann - 05-16-2015, 04:02 PM
RE: [FRAM71] Pre-Production Batch - Erwin - 01-02-2016, 08:13 AM
RE: [FRAM71] Pre-Production Batch - Oulan - 06-03-2015, 02:10 PM
RE: [FRAM71] Pre-Production Batch - Oulan - 06-03-2015, 03:47 PM
RE: [FRAM71] Pre-Production Batch - Oulan - 06-05-2015, 09:44 AM
RE: [FRAM71] Pre-Production Batch - Oulan - 06-08-2015, 07:13 AM
FlashPRO - Dave Frederickson - 06-11-2015, 03:42 PM
RE: [FRAM71] Pre-Production Batch - cruff - 06-13-2015, 12:04 PM
RE: [FRAM71] Pre-Production Batch - cruff - 06-15-2015, 11:22 PM
Blinkin' Lights - Dave Frederickson - 07-15-2015, 03:07 AM
FRAM71 LED - Hans Brueggemann - 07-16-2015, 11:47 AM
RE: [FRAM71] Pre-Production Batch - Andres - 01-25-2016, 10:40 PM
RE: [FRAM71] Pre-Production Batch - Erwin - 10-04-2016, 08:46 PM
RE: [FRAM71] Pre-Production Batch - Erwin - 10-04-2016, 09:04 PM



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