<emeb>
with the full audio PDM filter and amplifier.
<Xark>
emeb: Great, thanks.
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<Xark>
emeb_mac: Well...partial credit. I can see blue VGA with D/C/W/M prompt (and patch message), however, weirdly not right justified. I also see this message on serial terminal. However, other than caps lock LED working (not much else). Once I got it to print something like "L1" when I hit "D" on PS/2 keyboard.
<Xark>
emeb_mac: VGA image looked good (other than the text centering), so seems sync is okay?
<Xark>
(I need to try on another monitor...)
<emeb_mac>
Xark: Two things 1) did you flash the BASIC ROM into the SPI flash at location 0x40000-0x41fff? 2) Have you tried the "M" option at the boot prompt?
<Xark>
Hmm, no, and no. :)
<emeb_mac>
w/o flashing BASIC it's going to just die when you hit C and/or W
<Xark>
emeb_mac: Ahh, well shift-M did something going into monitor. However, there is a bytes-per-line (or other) issue with video memory,
<emeb_mac>
but M is a machine language monitor which is always there so you can at least peek/poke/run code
<Xark>
emeb_mac: Yes, monitor is "working" but as I mention, with mixed up display text (crammed on top of monitor).
<Xark>
One sec, I'll see if I can take some pics...
<Xark>
(But first...lets try to flash basic)
<Xark>
emeb_mac: https://justpaste.it/6nsre BASIC roms worked nicely, and PS/2 seems fine, VGA "display" seems fine, just the character memory mapping seems odd.
<Xark>
emeb_mac: My changes were basically (for now) remove GPIO, audio, composite and tweak PLL to generate 12 -> 39.750 (and tune clock speed for baud generator - but I bet it was close enough).
<Xark>
emeb_mac: Pretty good for a quick attempt (hardest part was getting stupid PMOD numbers pins straight from VGA PMOD diagram).
<emeb_mac>
Xark: good news.
<emeb_mac>
Only other thing might be tweaking some of the timing constants - in the ACIA there's a baud rate setting that depends on the clock speed.
<emeb_mac>
Xark: I'm kind of curious about what's wrong with the VGA display though. Not sure what you mean by "character memory seems odd"
<Xark>
emeb_mac: Yeah, that is what I tweaked (from 10Mhz to 9.9xxxxMhz)
<Xark>
emeb_mac: Can you see my picture? You can see where I typed ?"Hello" then hit enter and see where "hello" ended up (that display is what I see at BASIC boot after a few CRs and a bad attempt at a shift-2 quote for print).
<Xark>
It is like it still thinks I have 24 columns?
<emeb_mac>
Xark: OK - see it now.
<Xark>
yes, exacty 32 columns per line.
<emeb_mac>
Looks like the video driver code is for the NTSC
<Xark>
(So maybe "patch" failed)
<Xark>
Ahh, or that.
<emeb_mac>
let me check if the github source is not properly updated
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<Xark>
emeb_mac: I did not try to rebuild cc65 stuff yet...
<Xark>
(so maybe source is good, but not default rom?)
<emeb_mac>
Xark: check the cc65/video.s line 158 - should be .byte $48
<emeb_mac>
that's the text line width - 72char for VGA mode
<Xark>
emeb_mac: Yes, I remember from my real OSI-C1P. :)
<Xark>
(with ~24 visible)
<Xark>
Okay...rebuilt cc64 stuff but no change.
<emeb_mac>
weird
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<Xark>
Yeah, $48
<Xark>
Do I need to do anthing other than "make" (it seemed to make a rom.bin)
<Xark>
?
<Xark>
Rather, rom.hex
<Xark>
Hmm, maybe copy it to ../icestorm...
<emeb_mac>
yeah - remake in icestorm dir
<emeb_mac>
the icestorm Makefile should grab the new rom
<emeb_mac>
running make in cc65 doesn't update the fpga
<Xark>
Maybe a makefile date thing. I notice clean doesn't delete icestorm/rom.hex
<emeb_mac>
oh, could be.
<emeb_mac>
rm *.hex
<Xark>
Hmm, now on serial I just see "up5k is starting..."
<emeb_mac>
PS/2 kbd plugged in?
<emeb_mac>
I made some changes to PS/2 driver that hang if no kbd present.
<Xark>
emeb_mac: Now it is, but same hang at that message (on VGA too).
<Xark>
emeb_mac: Should icestorm/rom.hex match cc64/rom.hex (they don't).
<emeb_mac>
no
<emeb_mac>
rom.hex is the random placeholder data generated by icebram
<emeb_mac>
code.hex is the real stuff now
<Xark>
emeb_mac: I see.
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<Xark>
emeb_mac: Well, maybe new image hates both my PS/2 keyboards now...
<emeb_mac>
could try bypassing PS/2 and go serial only.
<Xark>
emeb_mac: Do you burn BASIC 2nd (with -n)?
<emeb_mac>
I use my own SPI utilities which don't overwrite BASIC when I update the bitstream
<Xark>
emeb_mac: I'm sorry, false alarm. I had PMOD "off by one row". :)
<Xark>
emeb_mac: Okay. I am using iceprog
<emeb_mac>
Ah OK - so PS/2 working now?
<Xark>
emeb_mac: Yes, it all looks good. PS/2 and all.
<emeb_mac>
cool. VGA all properly lined up too?
<Xark>
emeb_mac: ?FRE(0) shows -25347 :D I would have killed for that in the day (I think I got up to 6KB, buying 2114 chips from Radio Shack for $40 per KB).
<Xark>
emeb_mac: Yes, works beautifully on both of my VGA monitors.
<emeb_mac>
Xark: heh, yeah. I think I found a cheap source of 2114s for mine and got it up to 8k
<Xark>
(even with freq fudge - these are modern LCD jobbies)
<emeb_mac>
nice
<emeb_mac>
I should send you sources for some of my BASIC test code.
<emeb_mac>
for testing sound and video modes
<Xark>
emeb_mac: Cool. I soldered joysticks and added RS-232 to my OSI-C1P. So so glad my folks sprung for it vs 1802 COSMAC ELF (of course, I really wanted an Apple II, but those were way $$$).
<Xark>
emeb_mac: Sure, that would be great. I have been lax looking at docs to see how to load/save (more busy wih getting it ported to icebreaker & my pmods).
<emeb_mac>
Xark: I can send you binary to load into SPI flash
* Xark
notes "video games" are rather lacking on 6 7-segment displays...
<emeb_mac>
contains raw BASIC code that you can just use "LOAD XX" command on
<Xark>
emeb_mac: Right. I remember finding the companion site talking about Easter eggs and the garbage collection bug.
<emeb_mac>
Xark: someone has the whole thing in a single source file. A bit easier to find stuff in it.
<emeb_mac>
but I lost track of the link for that one.
<Xark>
emeb_mac: Well thank you for a very nice project for me to play with IceBreaker & Icestorm - and also to bring back some fond memories of my first computer. :)
<emeb_mac>
Xark: my pleasure - glad you got it all working.
<Xark>
emeb_mac: Yes, no real trouble (other than minor rom delete).
<Xark>
emeb_mac: I hope to get audio working (and maybe try composite version).
<emeb_mac>
Xark: cool. let me know how it goes.
<emeb_mac>
It's on my to-do list to make the audio a bit more useful. Maybe add envelopes, maybe convert it over to handle OPL style FM.
<Xark>
emeb_mac: I will get things fixed and (likely) put a fork on my github (since other IceBreaker FPGA peeps may enjoy it).
<tnt>
zignig: the cpu, I haven't pushed yet, but if you're interested, I can probably push it later today, I just didn't take the time to cleanup the toolchain much yet.
<zignig>
messy is awesome ! :)
<zignig>
I was looking for you as tnt, stealth alias ;
<zignig>
)
* zignig
moves the large HAMMER so the plc can see it clearly and will start listening to me.
<tnt>
zignig: tnt was taken on github :p
<zignig>
bah! , the HAMMER viewing worked , the PLC is now listening to 9600baud mod bus over RS232.
* zignig
mumbles about arcane protocols.
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<gruetzkopf>
automation tech is fun
<gruetzkopf>
so many absurd protocols
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* zignig
does a happy dance
<zignig>
managed to get an echo program running on Boneless , ...finally.. this has been chaffing for about a week.
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<keesj_>
zignig: nice
<zignig>
keesj_: thanks ;) , echo is the first step, it's on a tinybx through an FTDI on bread board.
<zignig>
now comes the fun bit, serial bootloader , tether. Then I don't have to recompile the gateware when I want the change the program.
<keesj_>
what core are you running? did you do the assembly , do you use a linker script?
<zignig>
tnt: yeah , I looked at that , fomu (and others) use it.
<zignig>
keesj_: I wrote an assembly parser that gets the names out of the processor, the whole thing is running in nMigen
<zignig>
builds and writes to flash in ( real0m12.295s ) no time at all... ;)
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<zignig>
tnt: like the cores that you have written , I'm doing the same for some nmigen constructs.
<tnt>
zignig: heh yeah, nmigen is probably better suited for easily plug cores together :)
<tnt>
but for actually writing the logic, I still prefer verilog. I just don't really like the mapping and syntax of migen for logic part.
<zignig>
tnt: fair enough , I find verilog like a double ended light sabre.. powerful weapon, misuse causes amputations.
<tnt>
Oh yeah, definitely, I stick to a very limited subset of it that I know behaves as I expect :p
<zignig>
tnt: indeed. I'm just really enjoying making FPGA thingies that work with a open tool chain.
<zignig>
nMigen actually writes into the yosys IR rather than verilog, so there is none is sight for these build.
<zignig>
however it can write and include verilog if needed.
<tnt>
Yeah, I haven't tried nmigen yet, so far my migen experience is pretty much for glasgow.
<zignig>
mmmmm want.
<tnt>
(where the advantage of migen are obvious in that case)
<zignig>
um, yep ;)
<zignig>
here make one of these , ZOT! , no be a VGA port ZOT!
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<felix_>
does nMigen check if both sides of a comparision have the same size? oMigen didn't throw an error and i'd like this to be an error tbh; at least in plain vhdl the synthesis tool would have complained
<zignig>
felix_: just checked that's a no.
<zignig>
well it does not raise an error
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<felix_>
meh :/
<zignig_bedtime>
open an issue , see what happens ?
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<felix_>
whitequark: ^ could that check be easily implemented in nMigen? i don't really see a non-errornous case of an equal-comparision on two signals with different width
<felix_>
for other comparisions i do see valid cases though
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<kc8apf>
I really need to make a list of all the boards in my lending library. If there's a particular FPGA you want to poke at for OSS-related things, let me know and I'll see if I have one.
<mwk>
mmh
<mwk>
kc8apf: do you have any old virtex?
<mwk>
<7
<kc8apf>
yup
<mwk>
which one[s]?
<kc8apf>
CompactPCI board with 4x XC2V4000, 1x XC2VP4, 1x XC95288XL, and a bunch of DSPs
<kc8apf>
details on that board are a bit light due to it being intended as an actual product rather than a pure dev board
<mwk>
oh, virtex 2
<mwk>
that could come useful in a few months
<tnt>
kc8apf: oh you got it in the end good :)
<kc8apf>
yup
<kc8apf>
need to work out the schematic at some point
<tnt>
yeah, I know I mapped the fpga connection with jtag bscan at som epoint, but couldn't find back the result ...
<kc8apf>
so many projects......
<azonenberg>
kc8apf, mwk: i have a significant number of spartan3/6 boards i am willing to loan out or even sell/give away permanently if there's interest
<azonenberg>
ranging from a tiny custom board with a tqfp 3s50a and like four GPIOs on a ribbon cable
<azonenberg>
up to two digilent atlys
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<kc8apf>
I've got a range of spartan3/3e/6 boards
<kc8apf>
also have older parts like xc2000, xc3000, etc
<tnt>
I have some xc3s400 ft256 chips in a tray if someone wants to make a board :p
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<kc8apf>
even have a MMI XC2064
<kc8apf>
though I'm very unlikely to lend that particular part out considering it's extremely rare
<azonenberg_work>
tnt: straight 3s400, not 400a?
<azonenberg_work>
if you dont mind offering one up to the decap gods, i bet digshadow would love a die photo
<azonenberg_work>
that's not in our collection yet
<digshadow>
azonenberg_work: of general interest, but other projects are higher priority for the forseeable future
<tnt>
azonenberg_work: If you want them, they're yours. I got rid of a bunch of old component trays and at the last second decided to hang around this one tray ...
<digshadow>
tnt: if you are going to toss them though I'll take them :)
<azonenberg>
Yeah its not a huge priority
<azonenberg>
but would be nice to have for the archives
<tnt>
digshadow: sure, just tell me where to send them ( tnt at 246tnt.com )
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<kc8apf>
I'll see about getting a few from digshadow to turn into dev boards
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<tnt>
kc8apf: make sure to bake them to drive moisture out. They're like 15 years old samples and definitely not kept in huminity controlled environment :) (I mean, they weren't outside in the rain or anything so they should be fine, just ... my appartement)
<kc8apf>
understood
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<whitequark>
felix_: it could be implemented easily, but i'm not sure if it should be
<whitequark>
the good thing is that the architecture of nmigen means it is *very* easy to implement this check out of tree and see how much it breaks
<whitequark>
that said, equality behaving differently from all other comparisons doesn't seem right to me at all
<tnt>
whitequark: what's the behavior currently ? I guess it zero extends the smaller signal ?
<felix_>
yeah, one comparison behaving differently than the other ones is indeed not very good
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<whitequark>
tnt: it zero extends or sign extends the smaller signal depending on whether it's signed
<whitequark>
i.e. it works the same way as normal 2's complement numbers
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<tnt>
ok, makes sense.
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<mkdir>
is there a schematic for ice40 stick?
<whitequark>
icestick?
<mkdir>
yes
<whitequark>
yup, in its user manual
<mkdir>
I hear it's as cold as iCE
<mkdir>
cool
<mkdir>
found it
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