Search found 1794 matches

by exxos
Tue May 22, 2018 1:51 pm
Forum: STOS
Topic: IF vs ON
Replies: 0
Views: 28

IF vs ON

I did some quick tests to benchmark IF vs ON ... 10 A=1 20 timer=0 : for Z=0 to 10000 30 if A=1 then gosub 110 40 next Z 50 print timer 60 timer=0 : for Z=0 to 10000 70 on A gosub 110 80 next Z 90 print timer 100 end 110 return The timer to benchmark how long things take. When run it outputs.. 219 2...
by exxos
Tue May 22, 2018 12:56 pm
Forum: STOS
Topic: AUTOEXEC.BAS explained
Replies: 0
Views: 19

AUTOEXEC.BAS explained

This file allows a STOS BAS file to auto execute when STOS loads. For example rather than having to constantly type in the missing link registration line, this can be done automatically in the AUTOEXEC.BAS . 10 rem register missing link 20 A = mostly harmless (1,2,3,4,5) However we would still have ...
by exxos
Mon May 21, 2018 9:48 pm
Forum: ST 16MHz V2.5 BOOSTER
Topic: V2.5 BOOSTER CURRENT PROTOTYPE STATUS
Replies: 122
Views: 7132

Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS

DMA stuff is done in bus master mode (driven by GLUE). So when there is a DMA transfer the CPU is not bus master. So that timeout tells us there is potentially something wrong with BR/BG/BGACK login to the SEC CPU. ST_BR, CPU_BG,CPU_BR seem to be always high... so nothing requesting the bus yet...
by exxos
Mon May 21, 2018 9:22 pm
Forum: ST 16MHz V2.5 BOOSTER
Topic: V2.5 BOOSTER CURRENT PROTOTYPE STATUS
Replies: 122
Views: 7132

Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS

Is the E clock running properly ? Looks good on scope.. 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 No idea, I keep trying things, but no luck.. If I keep pressing rese...
by exxos
Mon May 21, 2018 7:55 pm
Forum: ST 16MHz V2.5 BOOSTER
Topic: V2.5 BOOSTER CURRENT PROTOTYPE STATUS
Replies: 122
Views: 7132

Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS

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 ?!
by exxos
Mon May 21, 2018 7:19 pm
Forum: ST 16MHz V2.5 BOOSTER
Topic: V2.5 BOOSTER CURRENT PROTOTYPE STATUS
Replies: 122
Views: 7132

Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS

So something amiss, anyone any ideas whats going on here ? :shrug: dma.jpg 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 :shr...
by exxos
Mon May 21, 2018 12:46 pm
Forum: ST 16MHz V2.5 BOOSTER
Topic: V2.5 BOOSTER CURRENT PROTOTYPE STATUS
Replies: 122
Views: 7132

Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS

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

IMG_2728.JPG
IMG_2728.JPG (184.39 KiB) Viewed 37 times
by exxos
Sun May 20, 2018 6:55 pm
Forum: ROM UPGRADES
Topic: STE DUAL TOS 1.62 & TOS206
Replies: 2
Views: 341

Re: STE DUAL TOS 1.62 & TOS206

The links are as in this image..

Image

If the board is assembled and pushed in correctly it does all fit..

Image

Though I don't recommend leaving it in sockets anyway.
by exxos
Sun May 20, 2018 5:44 pm
Forum: NEWS & ANNOUNCEMENTS
Topic: STFM case remake
Replies: 109
Views: 6493

Re: STFM case remake

I mean, if we are talking about making a new board with the possibility of new extensions, why not fit in a new case? A new motherboard can be ATX and use any PC case. Though it doesn't solve the retro computer case issue. Mostly its because the keyboard is very long on the ST. could use a laptop k...
by exxos
Sun May 20, 2018 11:19 am
Forum: SOFTWARE PROGRAMMING & DISCUSSION
Topic: I digged little in TOS, AES, and seen not good thing
Replies: 4
Views: 148

Re: I digged little in TOS, AES, and seen not good thing

The RSC file data needs to be in RAM to allow editing of text though ?

If nothing changes in the RSC structure, then just ROM reads may work, but changes are always done, like the "tick" boxes in some menus etc ?