Mercurial > repos > blastem
annotate svp_util.c @ 1637:95880d947257
Fix for VRAM byte write order broke VDP FIFO testing ROM results. This change cleans up VRAM writes and fixes the regression while preserving the correct VRAM byte write order
author | Michael Pavone <pavone@retrodev.com> |
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date | Sun, 11 Nov 2018 22:39:29 -0800 |
parents | ca158bc091f9 |
children |
rev | line source |
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1620
a172f97d873f
Add the ability for a CPU definition to reference arbitrary C includes and use it to add a placeholder definition of svp_read_16
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1 |
1621
ca158bc091f9
Implement program ROM reads
Michael Pavone <pavone@retrodev.com>
parents:
1620
diff
changeset
|
2 void svp_prog_read_16(svp_context *context) |
1620
a172f97d873f
Add the ability for a CPU definition to reference arbitrary C includes and use it to add a placeholder definition of svp_read_16
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
3 { |
1621
ca158bc091f9
Implement program ROM reads
Michael Pavone <pavone@retrodev.com>
parents:
1620
diff
changeset
|
4 uint16_t address = context->scratch1 >> 1; |
ca158bc091f9
Implement program ROM reads
Michael Pavone <pavone@retrodev.com>
parents:
1620
diff
changeset
|
5 context->scratch1 = context->rom[address]; |
1620
a172f97d873f
Add the ability for a CPU definition to reference arbitrary C includes and use it to add a placeholder definition of svp_read_16
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
6 } |