V2.5 BOOSTER CURRENT PROTOTYPE STATUS

Help & information about the V2.5 booster.
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rpineau
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Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS

Post by rpineau » Fri Feb 02, 2018 10:17 pm

tested on both STE and MSTE
Working ones : MegaSTE (68020) / TT030 / Falcon with AB040 & Eclipse / 1040STF
Need testing : Falcon with CT2

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exxos
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Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS

Post by exxos » Fri Feb 02, 2018 10:59 pm

rpineau wrote:
Fri Feb 02, 2018 10:17 pm
tested on both STE and MSTE
:bravo:
4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxoshost.co.uk/atari/last/storenew/ - All my hardware mods for sale - Please help support by making a purchase.

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Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS

Post by exxos » Mon Feb 19, 2018 10:24 pm

Tiny update.. PCB's finally arrived :thumbup: Need to do a order to mouser and get the ATF chip and some other bits next...

sec-pcb.jpg
sec-pcb.jpg (135.69 KiB) Viewed 902 times
4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxoshost.co.uk/atari/last/storenew/ - All my hardware mods for sale - Please help support by making a purchase.

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Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS

Post by exxos » Tue Mar 06, 2018 6:52 pm

Small update.. Parts now ordered for this.. I'm going to ship the three boards and parts to a place in the UK for assembly as I just do not have time to do it. So hopefully in a few days time I can get the boards back and actually start working on the firmware.

Just as a re-cap, this board is the 68SEC000 test board, so I can see what the maximum speed of the CPU is. I am hoping to get it running at 50-64Mhz.

Even if the CPU cannot manage much more than the 68HC000 PLCC CPU, I will likely still use the SEC simply due to it is smaller, and a proper SMT package. With all the problems I am having with sockets, I have no choice but to move to a direct soldered part anyway. So moving to the 68SEC000 CPU is basically a good move anyway.
4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxoshost.co.uk/atari/last/storenew/ - All my hardware mods for sale - Please help support by making a purchase.

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Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS

Post by exxos » Fri May 11, 2018 7:58 pm

PCBs finally arrived... next to find time to finish firmware and test it.. but likely will finish the plug in STE booster first...

sec1.jpg
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sec2.jpg
sec2.jpg (73.29 KiB) Viewed 593 times
4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxoshost.co.uk/atari/last/storenew/ - All my hardware mods for sale - Please help support by making a purchase.

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Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS

Post by exxos » Mon May 21, 2018 12:46 pm

Finally cleared my table.. Now to work on the firmware..

IMG_2728.JPG
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4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxoshost.co.uk/atari/last/storenew/ - All my hardware mods for sale - Please help support by making a purchase.

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Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS

Post by exxos » Mon May 21, 2018 7:19 pm

So something amiss, anyone any ideas whats going on here ?

:shrug:
dma.jpg
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EDIT:

I tried removing AVEC from my code just to see what happens, and diag-cart says autovector error.. so that much be working... but still no idea whats going on with the DMA errors unless some sort of bus grant issue :shrug:
4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxoshost.co.uk/atari/last/storenew/ - All my hardware mods for sale - Please help support by making a purchase.

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Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS

Post by rpineau » Mon May 21, 2018 7:34 pm

$FFFFFC00 and $FFFFFC02 are adresses for Keyboard ACIA .. so there might be something going on with VPA/VMA there.
The 2 other one are code on the cartridge port.
Working ones : MegaSTE (68020) / TT030 / Falcon with AB040 & Eclipse / 1040STF
Need testing : Falcon with CT2

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Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS

Post by exxos » Mon May 21, 2018 7:55 pm

Its odd, because I see activity on VMA, but not VPA or AVEC ... but VMA shouldn't go low without VPA being low to start with ?!
4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxoshost.co.uk/atari/last/storenew/ - All my hardware mods for sale - Please help support by making a purchase.

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rpineau
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Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS

Post by rpineau » Mon May 21, 2018 9:08 pm

Is the E clock running properly ?
AVEC should definitely do something on interrupt from the keyboard. But if we can't write to the ACIA it probably doesn't trigger interrupt yet.
So it's really around VMA/VPA
Working ones : MegaSTE (68020) / TT030 / Falcon with AB040 & Eclipse / 1040STF
Need testing : Falcon with CT2

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