Search found 377 matches

by rpineau
Sat Mar 16, 2019 5:06 pm
Forum: STE / MSTE 68020 booster
Topic: STE / MSTE 68020 booster
Replies: 34
Views: 6403

Re: STE / MSTE 68020 booster

Yes just the main board.
Memory, network, video will be on add-on cards (some of witch are also mostly designed but no PCB has been made until we get a final version of the 68020 main board).
by rpineau
Sat Mar 16, 2019 1:08 am
Forum: STE / MSTE 68020 booster
Topic: STE / MSTE 68020 booster
Replies: 34
Views: 6403

Re: STE / MSTE 68020 booster

Still working on it... still busy with life things too :)
by rpineau
Sat Mar 02, 2019 5:42 pm
Forum: SOFTWARE PROGRAMMING & DISCUSSION
Topic: ASM programmer to write a simple IDE test loop program ?
Replies: 15
Views: 1369

Re: ASM programmer to write a simple IDE test loop program ?

yea, that gcc implementation is not really the best for sure.
I would have though that it would have done a loop with some optimization like if it's a multiple of 2 use cmp.w, if it's a multiple of 4 use cmp.l
Also instead of addq.l #1, use the (a0)+ and (a1)+more the 2 moves
by rpineau
Sat Mar 02, 2019 2:36 am
Forum: SOFTWARE PROGRAMMING & DISCUSSION
Topic: ASM programmer to write a simple IDE test loop program ?
Replies: 15
Views: 1369

Re: ASM programmer to write a simple IDE test loop program ?

You could use memcmp to compare the 2 buffers and only go in the "slow" comparison to display the error if memcmp fails. if(memcmp(buffer, read_buffer, BUFFER_SIZE) != 0) { for (int byte = 0; byte < BUFFER_SIZE; byte++) { if (read_buffer[byte] != (byte & 0xff)) { printf("Data mismatch: expected 0b")...
by rpineau
Thu Feb 28, 2019 12:30 am
Forum: MONGREL EDITION (version 2)
Topic: exxos IDE interface (untested)
Replies: 115
Views: 11086

Re: exxos IDE interface (untested)

If Paul's programmer doesn't work I can lend him my official one.
Rodolphe
by rpineau
Tue Feb 26, 2019 2:27 am
Forum: 3D MODELS
Topic: Filament recommendations
Replies: 11
Views: 1741

Re: Filament recommendations

Superglue works well on ABS printed part. But.. be careful as it act as a solvent for ABS, so it's ok to glue 2 parts together, not so much to fill holes and gaps.
by rpineau
Mon Feb 25, 2019 5:37 pm
Forum: 3D MODELS
Topic: Filament recommendations
Replies: 11
Views: 1741

Re: Filament recommendations

Wow, yea... too expensive
by rpineau
Tue Feb 05, 2019 6:31 pm
Forum: CHAT FORUM
Topic: Auto router on LSD..
Replies: 10
Views: 757

Re: Auto router on LSD..

I have fairly ok routing with Eagle... and certainly not what exxos is showing above !!
I use 7.7, route most by hand , then see what it can do for the rest.
by rpineau
Thu Jan 31, 2019 9:16 pm
Forum: ST 16MHz V2.X SERIES BOOSTERS
Topic: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)
Replies: 448
Views: 47916

Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)

you could make the CPU DTACK go back to HI using /ST_AS
CPU_DTACK = DELAYED_DTACK # ST_AS;
ST_AS is your resync CPU_AS to the ST (registered).
DELAYED_DTACK is the DTACK for the CPU after proper delay and force it to go back up when ST_AS get de-asserted (CPU_AS resync'd on 8MHz clock).
by rpineau
Thu Jan 31, 2019 9:01 pm
Forum: ST 16MHz V2.X SERIES BOOSTERS
Topic: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)
Replies: 448
Views: 47916

Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)

Ok, from memory (I don't have time to go dig through the the last 4+ years of email between me and Chris ... over 2100 emails) : GLUE assert DTACK as soon as it decodes a ROM access, expect the CPU to sample it on S4, then de-assert it at the end of S7 as the CPU latch the data on the falling edge o...