VIDEOPAC C7420 BASIC MODULE

[wilco2009]

With the original author (Gert van der Knokke) permission I have recreated the C7420 BASIC Module

https://www.youtube.com/watch?v=w5BvdcZ9Cn8

I have used a cheaper microcontroller than the original one selecting a STM32F4VG.

And the result is really great.

I like it a lot!

Now I have to finish some details with the SD to save/load BASIC programs, and design a final PCB to fit in a 3D printed case. 

I have permission from Gert to assembly a batch and publish the source code, due to it when I'll have everything finished I will start a list.

NOTE: I still have intention to make a exact clone, but this is for a near future.

Edited May 4, 2021 by wilco2009

[carlsson]

So did the original C7420 use a Z80 version of BBC BASIC or was that Gert's choice of dialect when he implemented it 10 years ago?

 

Edit: Ok, it was his choice of dialect as the original one has (c) Microsoft and for certain Acorn and Microsoft never were the same.

Edited May 6, 2021 by carlsson

[wilco2009]

10 hours ago, carlsson said:

So did the original C7420 use a Z80 version of BBC BASIC or was that Gert's choice of dialect when he implemented it 10 years ago?

 

Edit: Ok, it was his choice of dialect as the original one has (c) Microsoft and for certain Acorn and Microsoft never were the same.

Here there are a picture of my original cart C7420.

 

 

The look and feel is exactly the same as far I have seen, and the ROM content is also the same, except for a patch of two bytes made by Gert to implement the simulation of the tape with the SD reader.

 

[carlsson]

That's both cool and confusing at the same time since from what I can tell those should be two different BASIC versions. Sure you could set up the screen to look the same, but for instance BBC BASIC has those VDU commands and IIRC several commands for structures like better loops, procedures etc that a regular Microsoft dialect doesn't have.

[wilco2009]

Hi!
I have the module already working with two modes, C7010 and C7420.

C7010 mode

https://youtu.be/8NgHjZwd3js

C7420 mode

https://youtu.be/yL3LTtYMksg

Remote keyboard for C7420
https://youtu.be/CU6Bi0u1aZs

Now I have to provide a good case for the emulator.  ;:)

[jimj]

Does this work with the Odyssey 2 or just teh Videopac?

[wilco2009]

On 7/31/2022 at 3:19 AM, jimj said:

Does this work with the Odyssey 2 or just teh Videopac?

Just videopac G7400

[manopac]

can we already sign up for the list? 🙂 if so - count me in please

[aotta]

@wilco2009 If the project is still running, please add me to the list, thank you