emul/pico-zxspectrum
emul/pico-zxspectrum
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Code

Tidy up

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This commit is contained in:
burt 2021-09-19 09:01:33 +01:00
parent b23cc0e873
commit 1eeb8de422
3 changed files with 4514 additions and 4 deletions
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docs/1200px-ZXSpectrum48k.jpg Normal file
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4510
docs/Pico-R3-SDK11-Pinout.svg Normal file
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8
tmds_encode_zxspectrum.S
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@ -74,7 +74,7 @@ tmds_encode_screen:
adds r3, r7
ldr r7, =palettised_1bpp_tables
ldr r7, =palettised_2bpp_tables
mov r9, r7
mov r10, r1
@ -131,7 +131,7 @@ tmds_encode_border:
adds r1, r7
adds r1, r3
ldrb r1, [r1] // Load the colour intensity nibble for the channel
ldr r7, =palettised_1bpp_tables
ldr r7, =palettised_2bpp_tables
lsls r1, #5 // * 8 * 4
adds r1, r7 // r1 now point as the LUT entry
ldr r7, =(8*3)
@ -152,9 +152,9 @@ tmds_encode_border:
pop {r4-r7, pc}
.section .scratch_x.palettised_1bpp_tables, "a"
.section .scratch_x.palettised_2bpp_tables, "a"
.align 2
palettised_1bpp_tables:
palettised_2bpp_tables:
// background, foreground = 00, 00
.word 0x7f103, 0x7f103 // 0000
.word 0x7f103, 0x7f103 // 1100