I believe the VT340-A has the ROM card, but the VT340-G (or plus) does not. The same goes for the VT330A, B, and C versus the D, E, and F.
Paul On Mon, Apr 8, 2024 at 1:07 AM Glen Slick via cctalk <cctalk@classiccmp.org> wrote: > On Sat, Apr 6, 2024 at 8:26 AM Douglas Taylor via cctalk > <cctalk@classiccmp.org> wrote: > > > > On 4/6/2024 11:14 AM, Tony Duell via cctalk wrote: > > > On Sat, Apr 6, 2024 at 3:54 PM Douglas Taylor via cctalk > > > <cctalk@classiccmp.org> wrote: > > >> The DEC VT340 has a slot in the back of the terminal to insert a ROM > > >> cartridge. I can't find any description of what this DEC labeled ROM > > >> cartridge would do for you. I've seen them with V1.1 and V2.1 > markings, > > >> does anyone remember what additional capabilities these ROM cartridge > > >> provide? > > > Will the terminal work at all without that cartridge fitted?. I've had > > > a quick look at the VT330 and VT340 printsets and I can't obviously > > > spot any firmware ROMs on the main board schematics. So my first guess > > > is that said cartridge is the terminal firmware. > > > > > > -tony > > > > Hmm, I have a VT340 that seems to pass POST but no video. It does have > > a cartridge inserted into the slot, you may be exactly correct. > > > > Doug > > The VT340 I have does not have an opening on the back where the ROM > slot would be. Maybe the ROM card is still there in that location, but > the back cover molding was changed to remove the user accessible slot. > I'd have to pull the cover off to see if the ROM board is still in > that location. > > The VT330 I have does have a removable ROM card. That one might be a > pre-production unit. Instead of mask ROMs it has EPROMs, and the > manuals it came with are not production level manuals. >
