Tatung Computer Forum

Hello,

Here is a copy of the 80 Column Card User Manual that have I have repaginated and OCRd to enhance printing.

Mike

Mike, sorry I didn't come straight back; I didn't know you replied as, despite notifications for everything being turned on and subscribed to the topic I am not getting any notifications and they are not going into spam. Oops! I just noticed the need for a tick in the box below. Many thanks for the ...

Nothing from the RF end of things, as I say the VDP is not being enabled. Thanks for the hint about CTRL N; I will give that a try to see what happens. Next steps: 1. What MOS ROM version does everyone else with a TC02 80 column have in use? 2. I am wondering if there is an error in the MOS ROM ...

I have enhanced the Einstein Reference Card document to make it easier to print and use (attached).

Mike

Thanks Mike but that is way upstream from the problem, /VDP isn't even changing state to enable the processor. I have changed IC26 as this is the source of /VDP but to no effect. I discovered that link block M003 in the 80 Column module dictates, at switch on, if the video defers to the unit or ...

On my TC01 I have perfect output from the 80-Column Card but no colour signals from the VDP outputs. This hasn't worked since I obtain the machine. I checked VDP input signals /CSR and /CSW from IC32 pins 6 and 8 respectively, they are stuck Hi but /RD and /WR are changing state. The above two ...