#2211 GUI setting for "VIC-20 model" annoyances/bugs

[tokra]

Using r46018 GTK on Win64.

The "Machine"->"Model"-settings for VIC-20 have some annoyances/bugs(?):

• when you change the "Model" setting, the memory expansions are "removed" immediately, but the UI is not updated. So when switching from a fully expanded VIC20 PAL to a VIC20 NTSC you have to leave the settings menu and re-enter it to activate the expansions again.

• The "VIC model" radio-buttons are essentially useless. You can choose the VIC-chip model (PAL or NTSC) with the "Model" setting above and this also changes the corresponding Kernal-ROMs. Using an NTSC-VIC with a PAL-Kernal-ROM and vice-versa makes absolutely no sense. Usually software will detect the model by the Kernal-ROM VIC-setup-table. So this box could really be left out

• In the "Model"-settings one might argue the "VIC 21"-setting could be removed. It seems that this was only a local dealer who packaged the VIC-20 with a 16K-expansion. Having this as a separate option makes this larger and more official than it really was, see:

https://www.zimmers.net/cbmpics/cvic1.html