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![]() with the assistance of the technical literature listed below. 1974 Edition 2nd revised version Nichigai Associates |
![]() Saturn SCU. Since it consists of material which is not included in the previous manual, be sure to check the contents against this newest manual. |
![]() DSP Data RAM. |
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![]() prohibited. VDP1 read access can be in byte and long word units. (DRAM: 1 Mbyte) cannot be used. which read is prohibited may be accessed if the cache address is used since the CPU runs in the following way when the cache is full. |
![]() and B-Bus is prohibited. Refresh is not generated for SDRAM while waiting and may hang up. (May 31, 1994) must be set to 0. read of the A-Bus (dummy). between the A-Bus and B-Bus. For example, while continuous write is performed by the CPU to VDP (B-Bus), SCU-DMA does not start until continuous write ends even if SCU-DMA initial activation for VDP2 (B-Bus) from the A-Bus. However, while starting SCU-DMA, CPU access to A-Bus and B-Bus is on standby. been deleted. Part of the specification change is reflected in the 2nd version manual (May 31, 1994) |
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![]() used concurrently, the priority order is ignored. (The DSP DMA command is also counted as 1 chann activation after DMA ends. For example, when set so that DMA starts at H-Blank, operation becomes unstable if the set data size is larger than the size enabling transfer within 1 line (until the next H-blank only for 1 time. set register*2 is not allowed during DMA activation at this level. Hang up occurs if rewritten. * to the DMA illegal interrupt status bit. |
![]() 2. The write address and read address have been reversed. 3. The table address (m value in the table below) must place the beginning address in 32, 64 128, 2 . . program ends by the ENDI command. to the Data RAM of the DSP. SCU-DMA operation will be delayed. Operation of the SCU-DMA is normally performed when the ICE execution condition is the parallel mode (prompt is the # condition). |
![]() (bus right request) signal must be E (always enabled). Changing the E7000 system of ICE is unnecessary because BREQ is E by default. set a value within a range that can be used. In case of an NTSC non-interface (1 screen 263 lines, effective screen 224 lines), for example, interrupt will occur as follows: screen. occurs." If data larger than the count number of 1 line is set to the Timer 1 set data register, Timer 1 interrupt no longer occurs for each line. [Count Number Range] areas (2000000 external operations are the same for write access. (External access becomes byte access when accessed in byte units.) |
![]() effective condition (ARFEN = 1). This bit should not be changed by the user. 1 and change to 4 Mbits X 2. This change in setting is done within the Boot ROM and requires no change by the user. level 2 while DMA level 1 is activated. 1. V-Flag (overflow flag) is cleared away. DSP is being executed, please do not read this address for the program obtained by DSP end interrupt. |