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Top Forums Programming Casio FX-CG50 Scientific Calculator and Python Post 303042000 by Neo on Tuesday 10th of December 2019 11:18:13 PM
Old 12-11-2019
Here is a copy of the Amazon review I wrote for this Casio PRIZM FX-CG50:

Quote:
As an electrical engineer who works in software engineering, I have used a lot of calculators. The Casio PRIZM FX-CG50 does not have a nice feel in my hands at all. In fact, it feels rough and unrefined, bulky and cheap. I think the design is way too thick, perhaps because of the decision by Casio to run device this on four AAA batteries?

Anyway, I don't like the design in the least (for the money paid). The keyboard is hard to read, the contrast between the functions and the black background is poor, perhaps by design; so this device it is not for me. I also do not like how the FX-CG50 handles errors.

The documentation provided and the PDF online is very poor. Thank goodness for YouTube tutorials (but others, not Casio); but you would think that Casio could create their own very good tutorials; but no they cannot.

The macOS firmware upgrade software for the PRIZM FX-CG50 only works on High Sierra, which is two major releases back. All my main macs run Catalina (I own four Macs, including a 12 core Mac Pro from 2013, a Mac Mini and two MacBook Airs), so you cannot upgrade the PRIZM FX-CG50 software on three of those those four machines. The "good news" is that do happen to have an obsolete MacBook Air (very old MBA) which cannot upgrade past High Sierra, so I had to use that obsolete MBA from my closet to upgrade the firmware! Why Casio only supports High Sierra and not Mojave or Catalina is a total mystery to me! I guess Casio simply does not care about firmware upgrade software for macOS.

If I paid $25 bucks for this, I might expect less; but for the money, I realize I should not have bought this. The Casio PRIZM FX-CG50 is not recommended at all. Sorry to be truthful and honest.

PS: The way the Casio PRIZM FX-CG50 runs Python is not impressive at all.

Last edited by hicksd8; 12-11-2019 at 09:14 AM..
 

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fwupgrade(8)						      System Manager's Manual						      fwupgrade(8)

NAME
fwupgrade - Updates the system firmware from a loadable firmware image (*.exe or *.sys) SYNOPSIS
/sbin/fwupgrade [-a] [-e] [-ignore] [-q] [-r] [-s] [-v] [-t CD-ROM_path] [-i path] /sbin/fwupgrade [-v] -f firmware_filename OPTIONS
Forces a firmware update without comparing the current firmware with the source firmware. Updates only if the current firmware is not equivalent to the source firmware. Specifies the path of the (*.exe or *.sys) firmware image. This is only used when you use a firmware image that is not on the distribution CD-ROM. For example, an image obtained from a web site download. You must ensure that the firmware image is the correct one for the target system, and verify that the image has the necessary support. This is indicated by bit1 and bit2 in the Flags column of the smmtable.txt file. Specifies the mount point of the target disk during an installation. This switch is to be used exclusively by the Tru64 UNIX install program. This switch suppresses error messages that are displayed if no firmware files are found on the distribution media, and causes the fwupgrade program to exit successfully. Does not upgrade the firmware, but displays information about the success of the desired operation. This enables you to to query fwupgrade to verify planned actions, such as ensuring whether the firmware really needs to be upgraded, or finding out if the target system supports a soft-reset. Resets the machine by software and reboots after the upgrade. The utility will exit with an error status if the system hardware does not support this feature. Sets silent mode, in which the firmware is upgraded without prompting you. If there is an error, the program also exits silently without prompting you. When this switch is used, you are not prompted for confirmation for the upgrade to proceed. Specifies the path of the mounted Firmware CD. If the -s option is not specified, you will be prompted to enter this path. Sets verbose mode, in which additional information is dis- played. DESCRIPTION
The fwupgrade command provides a means of updating the system firmware when a (*.exe or *.sys) loadable firmware update image is available. A firmware upgrade will shut down the system and require a full hardware reset. If the source firmware image does not support the loadable firmware update functionality, fwupgrade will exit with error status. The system must provide a SAVE_ENV callback that complies with the Alpha SRM. You can tell if the SAVE_ENV callback exists by executing the command: # consvar -a The SAVE_ENV is supported on the target system if the following message is displayed: Console environment variables saved If the SAVE_ENV is not supported on the target system, the following message is displayed: Failed to save environment variables Your programs can either check the return status of consvar -a or the return status of: setsysinfo(SSI_PROM_SAVE_ENV,...). See the setsysinfo(2) reference page for more information. EXIT STATUS
If you confirm that the firmware is to be upgraded, and no errors occur setting up the upgrade process, then fwupgrade will reboot the sys- tem rather than exit. An exception is that there is no reboot performed when the -i option is used. Instead, a status of 0 is returned. If you query whether the process would be successful, or if an upgrade request fails, the exit values are: Success. Firmware is adequate and supported. Failure. Firmware is not supported. Firmware needs to updated (when queried). EXAMPLES
To find out all information about your current firmware, platform, and the source firmware: # /sbin/fwupgrade -v -q Current Firmware: 4.10-0 Platform: 17-2-1091 Unable to open smmtable.txt at '/'. What is the mount point for the firmware CD? /mnt Firmware CD Version: 4.0 Distribution Firmware: 4.10-0 LFU File: /dev/rz2a at alpha1000/as1000_e4_v4_8.exe LFU Support: Y Soft Reset: Y System Firmware does not need to be upgraded To upgrade the firmware: # ./fwupgrade -t /mnt Current Firmware: 4.7-0 Are you sure that you wish to update the system firmware from 4.7-0 to 4.10-0?(yes/no)yes fwupgrade:Rebooting to update the system firmware... Terminated # syncing disks... done rebooting.... (transferring to monitor) FILES
The loadable firmware update images provided by Compaq. Typically, these are distributed on a firmware CD-ROM. If you obtain firmware images from a source other than the firmware CD-ROM (such as a www server) you should verify that they are the correct images for the tar- get system. A file provided with the firmware CD-ROM, used to determine the presence of the firmware CD-ROM and information about source firmware. SEE ALSO
Commands: consvar(8) Functions: setsysinfo(2) fwupgrade(8)
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