b4721ae46b
fix pixel shift
2023-01-22 09:37:37 -08:00
dbbec8ed6d
ok two things wrong:
...
1) bit masks are backwards
2) iter always returning 0
2023-01-22 09:34:42 -08:00
d36667938d
run it (fails)
2023-01-22 09:13:19 -08:00
efac8f4f62
now writes pixels sorta
2023-01-22 09:09:12 -08:00
a8872b4e66
hmm
2023-01-22 08:34:06 -08:00
2e5f91a0db
wip gfx
2023-01-22 08:20:59 -08:00
335c4d2c96
and use display list copy in aligned memory
2023-01-22 07:36:08 -08:00
6fc07b9e65
hmm
2023-01-22 07:23:46 -08:00
9cbcf1cb5a
strings fixed but .... something's corrupt in display
2023-01-22 06:35:41 -08:00
0c04e7ddc8
text but it fails cause not ascii lol
2023-01-22 06:12:40 -08:00
7cb879d110
fix graphics set
...
forgot that the OS copies shadow registers over lol
2023-01-22 05:54:50 -08:00
f22653bd87
wip loop
2023-01-21 19:17:30 -08:00
8044dbfc21
whee
2023-01-07 22:57:18 -08:00
a47836a39a
mwahahah
2023-01-07 22:02:26 -08:00
c5a62cfa1d
wip
2023-01-07 21:19:40 -08:00
c3c5968749
experimenting with fixed-point log lookup table
...
probably won't be enough precision to work with
at a size that fits in memory :D
2023-01-07 20:32:59 -08:00
f1adffd175
asdlijf
2023-01-07 20:11:52 -08:00
a34687ba25
hmm
2023-01-07 20:06:12 -08:00
38005a6f7d
hmm
2023-01-07 19:36:11 -08:00
badc730f2b
definitely too long :D
2023-01-07 18:37:55 -08:00
fe23193ce9
woot this one works but is too huge
2023-01-07 18:33:06 -08:00
7da3993bfd
wip
2023-01-07 18:30:32 -08:00
a6c49a2ef9
oh ho
2023-01-07 17:52:14 -08:00
d32b630320
woo
2023-01-07 17:37:41 -08:00
49831dc048
wip logs
2023-01-07 17:20:18 -08:00
b36ab77e97
update readme
2023-01-06 17:28:35 -08:00
32bd5a540c
flesh out the mandelbrot iteration loop
...
some bits i missed increased total to:
1939 - 3007 cycles per iteration
probably still buggy, will test later :D
2023-01-06 17:18:13 -08:00
3d94a9b5d4
show range
2023-01-05 11:58:32 -08:00
c7e7129eb2
whoops missed a few cycs
2023-01-05 11:55:41 -08:00
2340f8210e
update round & sketch out the iter cycle count
2023-01-05 11:36:42 -08:00
7f70f14fc2
one last round sketch
...
combining copy and round
2023-01-05 11:17:13 -08:00
7ac0df0343
Added two version of 16-bit rounding
...
round16_incdec uses inc and dec
round16_addsub uses adc and sbc
the incdec version is the same when no rounding is needed
but saves about 8 cycles on the rounding cases, for an
average savings of 4.5 cycles for randomly distributed inputs
untested so far
2023-01-05 09:06:07 -08:00
6edd2f71d9
whoops added wrong
2023-01-04 21:26:47 -08:00
373e1441d3
comment tweaks
2023-01-04 21:09:45 -08:00
3a0545b673
tyop
2023-01-04 21:04:53 -08:00
1408855eed
Note how many cycles loop unrolling saves
...
+4 cycles one-time setup
ldx #8 ; 2 cyc for first 8
ldx #8 ; 2 cyc for second 8 (different shift behavior)
-5 cycles/iter to get bit now
lsr arg + 1 ; 5 cyc
rol arg ; 5 cyc
+10 cycles/iter to get the bit in a loop
dex ; 2 cyc
bne ; 2 cyc
4 cycles/iter for the loop
4 + (14 * 16) = 4 + 224 = 228
2023-01-04 21:02:18 -08:00
519f8ad635
whoops
2023-01-04 20:57:07 -08:00
efd722eeb2
update cycle count for imul16
2023-01-04 20:37:16 -08:00
41915cf122
save a few bytes by removing a dupe tail from two cases now
2023-01-04 20:33:42 -08:00
38091e535f
hmm
2023-01-04 20:31:39 -08:00
58519381bf
hmm
2023-01-04 20:12:34 -08:00
fa599be775
wip fix
2023-01-04 19:52:56 -08:00
9682b4a6b3
readme
2023-01-04 19:15:26 -08:00
5605cc4652
woo
2022-12-30 18:25:43 -08:00
2d67cdc498
woo
2022-12-30 18:21:31 -08:00
4b1001bfdc
annotate cycle counts
2022-12-30 17:33:18 -08:00
6583dc3680
wip
2022-12-30 01:05:52 -08:00
f50882a24d
maybe
2022-12-30 00:55:48 -08:00
27d046011e
looks workable
2022-12-30 00:43:44 -08:00
fe9a35353b
works for 3 * 5 = 15
2022-12-29 20:32:58 -08:00
