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Jaso1024

Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @10:00PM (#47645466)
Fixed some of these in the update I just pushed, will fix the rest in the next update. Any thoughts on how to scale the difficulty a bit better?
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @09:58PM (#47645450)
lol, yeah, the time should be fixed though rn I think? depending on what level of difficulty you select in the racer game. The wiring is something I've been struggling with, working on making it better.

I intentionally made it s.t the truth tables are based on not just the input into the node, but based on all actual inputs to the node (so if you have additional processing on input x and y, itll show you the not w/ respect to input x and y and not just the immediate input).

will add a rotating cue in the next update

Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @09:53PM (#47645423)
lol, i made them skippable earlier to day, if u refresh now it should let you skip them
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @09:52PM (#47645418)
not to my knowledge, but i'd consider adding this in (i'm planning to extend to TPUs and apple silicon NPUs later, so i might just add this in aswell). what would one want the levels to look like?
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @09:50PM (#47645403)
makes sense, ill change the color a bit in the next update
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @06:24PM (#47644147)
Next update has warnings about bus contention (multiple things into one node) when its an issue, and will have a proper show solution button.

For level 1.1 the solution is basically to take the ground and use that as a singular input to the source pin of an nmos transistor, let the input to the level be the gate pin of that same nmos transistor, and to let the drain (top) pin of that nmos transistor connect to the level's output

Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @06:09PM (#47644031)
oh its b/c of the contention between the outputs of the ands for the answer, u need an or gate to merge them (ill add an update w/ visual feedback for these sorts of thigns)
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @06:08PM (#47644016)
yeah, I felt that when playing myself, do u think this level is not necessary given previous levels? (it would also help me if u indicated ur level of familiarity w/ the concepts s.t i can calibrate)
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @06:06PM (#47643993)
good point, made an update that added difficulty levels to the minigames (handles the timer), and i'll probably move the truth tables minigame to after the user builds the truth tables, thx
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @05:45PM (#47643790)
Thanks for all the feedback! I've fixed some of these issues (e.g., capacitor levels, switching back to prior levels upon finishing / refreshing, deletion (theres a sign when you hover a component now)), but many of them i'll be fixing today.

I'll be uploading arcs 3 and 4 soon (which will be programming the CPU and the start of GPU arch soon (people have gone through arcs 1 and 2 slightly faster than I expected)

Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @05:37PM (#47643715)
progress is saved automatically, what issue are you encountering?
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @04:22PM (#47642972)
makes sense, idk if i want to remove times altogether (i personally found it fun + i want the game to be fun for all levels of familiarity), but ill add a modal to explicitly select difficulty level at the start of the racer game, i def agree w/ u overall
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @04:11PM (#47642887)
Time to get on zetamac (all jokes aside, it should be optional, i'll also make racer games slower + adaptive soon (today))
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @04:10PM (#47642874)
Oh, the drain should only be connected to the output, not drain aswell (irl this would kill one's chip, I'll add a feature to show short-circuiting). on pmos the source should be vdd, on nmos the source should be gnd (this doesn't apply for some later levels, but does for earlier ones).
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @04:06PM (#47642837)
Not at the moment unfortunately, I've actually completed a good chunk of the GPU levels, but I think ppl will need to do act 2 and 3 for it to make sense
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @04:05PM (#47642830)
just pushed a fix
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @04:02PM (#47642804)
Yeah, I had added it to make it compatible w/ my simulation system, just changed how I was handling the levels altogether, if it still has 3 try doing a hard refresh (Ctrl + Shift + R on windows, cmd + shift + R on macos)
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @04:01PM (#47642784)
lol, I hadn't seen that video before but its a good one. Na, this is the guide to comp arch that will (hopefully) end all instances of toil over documentation for any sort of processor when learning
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @03:59PM (#47642765)
Yeah, its not mobile-ready atm, ill push an update to make it mobile-friendly in the next day or so
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @03:58PM (#47642754)
lol, mb; ill make that more clear (ill also give the ability to copy things cross level and intra-level)
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @03:53PM (#47642707)
fixed!
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @03:53PM (#47642700)
Thanks for telling me, just pushed a fix
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @03:50PM (#47642665)
oh, as in delete on the keyboard. it shoudl also work just to right click now (might need to refresh)
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @03:50PM (#47642658)
I just pushed a fix for this, so it should be better now, its also optional now
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @03:49PM (#47642654)
I want to fix this, could you elaborate a bit (would help even more if you pressed the copy circuit and pasted the result here)
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @03:43PM (#47642600)
Hi everyone, commenting to address feedback:

- Made timed minigames optional (e.g. binary tables)

- Added 7 (optional) intro levels to walk through pmos and nmos transistors

- Fixed the bug in the capacitor levels

- Changed editor bg to use dots instead of lines to fix wire confusion

Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @03:40PM (#47642574)
truth tables round is optional now!
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @03:39PM (#47642565)
optional now!
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @03:37PM (#47642546)
damn :(
Re:Show HN: A game where you build a GPU on Saturday April 04, 2026 @03:37PM (#47642542)
lol (plz come back), will be optional in 30 min (lemme push)

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