ChanServ changed the topic of ##yamahasynths to: Channel dedicated to questions and discussion of Yamaha FM Synthesizer internals and corresponding REing. Discussion of synthesis methods similar to the Yamaha line of chips, Sound Blasters + clones, PCM chips like RF5C68, and CD theory of operation are also on-topic. Channel logs: https://freenode.irclog.whitequark.org/~h~yamahasynths
<protosphere>
the alligator clip is a ground (mains earth in a bench scope) lead usually, whereas the hook tip is what you connect to the ic pin (or whatever)
<protosphere>
assuming it's the usual type with a bnc connector on the other end
<andlabs>
yeah
<andlabs>
apparently I can remove the hook at the end of the rpboe too
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<fseidel>
cr1901_modern: fun that the next step of the demoscene seems to be bots that run tiny code snippets on twitter
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<cr1901_modern>
fseidel: I got into sizecoding briefly last year. Made an EGA heart in _way too many_ bytes using raw EGA writes. Also, it had many bugs.
<cr1901_modern>
So I'm not entering any demos anytime soon
<andlabs>
[17:46:33] <andlabs>the signals coming out of the video port look good on the oscilloscope
<andlabs>
[17:46:41] <andlabs>and as for the power light... nothing
<andlabs>
[17:46:47] <andlabs>the drive lights are on but not the power light
<andlabs>
I'm now tempted to just fully disassemble the computer to see what plugs into where but I'm increasingly uncertain about putting it back together again...
<andlabs>
but I might as well to see if the battery has leaked
<andlabs>
or not, because I have no idea how it comes apart
<andlabs>
it's got screws coming in both directions everywhere I look
<andlabs>
why is this model not more well documented argh
<andlabs>
wait no I got the bottom, there's an extra screw
<andlabs>
wait no lol the battery was visible the whole time
<andlabs>
good news: it's not leaking
<andlabs>
bad news: it's dead
<andlabs>
does a dead battery lead to the computer refusing to even flash the power light?
<protosphere>
i believe it should still boot at least
<protosphere>
https://gamesx.com/wiki/doku.php?id=x68000:sram_issues suggests booting off a disk to reset the SRAM - which makes me assume it'd be bootable in that state
<andlabs>
then something else is wrong...
<protosphere>
on SASI models you also won't be able to boot off a SCSI device with a dead battery since the SxSI bootloader is stored in SRAM
<andlabs>
yeah
<protosphere>
you mentioned the video signals looked okay, do you get a picture at all though?
<andlabs>
nope
<andlabs>
at least not with the monitor that this came with
<andlabs>
I can try getting a VGA cable but that'll take a few days
<protosphere>
do you have a pc98 or something with the same connector you could test the monitor with?
<andlabs>
oh
<andlabs>
I have the epson laptop
<andlabs>
if that counts
<andlabs>
wait no it doesn't; different video connector