Autor
| Getting started with MSX coding (assembler)
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pitpan
msx master
Posts: 1389 |  Postado em: 30 Setembro 2008, 08:42 |
Quote:
| No, i tested on the unfamous Sony HB-10P with the vdp clone. (write of 6144 bytes continuosly) This model is knew to be the slowest in VRAM Access.. With 26T-States there is no corruption even with ALL SPRITES ON (the worst case)
(i have 32 sprites of 16x16 pixels on screen arranged on a 4x8 matrix)
So the effective time is about 7.2 us
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Mmm. I'm not sure that disabling/enabling the sprites would make a difference in VRAM access speed when considering MSX1 machines. Has anyone tested this? I know that it is true for V99x8 enabled computers, but I doubt that it would make a difference in a TMS99xx or compatible VDP. |
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PingPong
msx professional
Posts: 1023 | Postado em: 30 Setembro 2008, 09:04 |
Quote:
| Quote:
| No, i tested on the unfamous Sony HB-10P with the vdp clone. (write of 6144 bytes continuosly) This model is knew to be the slowest in VRAM Access.. With 26T-States there is no corruption even with ALL SPRITES ON (the worst case)
(i have 32 sprites of 16x16 pixels on screen arranged on a 4x8 matrix)
So the effective time is about 7.2 us
|
Mmm. I'm not sure that disabling/enabling the sprites would make a difference in VRAM access speed when considering MSX1 machines. Has anyone tested this? I know that it is true for V99x8 enabled computers, but I doubt that it would make a difference in a TMS99xx or compatible VDP.
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I also never know about speed with or without sprites enabled. Simply i have tested in the worst case..... |
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