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Re: PPC + Zorro-III
> Presne mas PCI 133MB/s protoze 32bit * 33MHz = onech 133MB/s.
> U ZorroIII, pokud se nepletu, je takt na ????? * 32bit = ...... MB/s
Bohuzel nemuzu najit text, kde je vse popsany presne, ale
pokud si to dobre pamatuji, tak je to takhle:
ZorroII je 16b data, 24b adresa, 25MHz = 50MB/s
ZorroIII je 32b data, 24b adresa, 50MHz, ale multiplexne = 100MB/s
Posilam i zapojeni ZorroII slotu, tak posudte nakolik je stejne
s internim slotem A1200. Kazdopadne A3,4000 maji specialni chip
pro rizeni sbernice 'Buster'. Ten bude nutny pro ZorroIII sloty
a hlavne pro DMA prenosy.
Popis ZorroII 100pin. konektoru:
--------------------------------
2 100
-------------------------------------------
-------------------------------------------
1 99
Pozn: <n> - poradi slotu
1 - GND 51 - /(VMA)
2 - GND 52 - A18
3 - GND 53 - /RST
4 - GND 54 - A19
5 - +5V 55 - /HLT
6 - +5V 56 - A20
7 - /OWN 57 - A22
8 - -5V 58 - A21
9 - /SLAVE <n> 59 - A23
10 - +12V 60 - BR <n>
11 - /CFGOUT <n> 61 - GND
12 - /CFGIN <n> 62 - /BGACK
13 - GND 63 - D15
14 - /C3 TAKT 64 - /BG <n>
15 - CDAC TAKT 65 - D14
16 - /C1 TAKT 66 - /DTACK
17 - /OVR 67 - D13
18 - XRDY 68 - READ
19 - /INT2 69 - D12
20 - -12V 70 - /LDS
21 - A5 71 - D11
22 - /INT6 72 - /UDS
23 - A6 73 - GND
24 - A4 74 - /AS
25 - GND 75 - D0
26 - A3 76 - D10
27 - A2 77 - D1
28 - A7 78 - D9
29 - A1 79 - D2
30 - A8 80 - D8
31 - FC0 81 - D3
32 - A9 82 - D7
33 - FC1 83 - D4
34 - A10 84 - D6
35 - FC2 85 - GND
36 - A11 86 - D5
37 - GND 87 - GND
38 - A12 88 - GND
39 - A13 89 - GND
40 - RESERVED 90 - GND
41 - AD14 91 - GND
42 - RESERVED 92 - E7M
43 - A15 93 - DOE
44 - RESERVED 94 - /BUSRST
45 - A16 95 - /GBG
46 - /BERR 96 - RESERVED
47 - A17 97 - N/C
48 - /(VPA) 98 - N/C
49 - GND 99 - GND
50 - E-TAKT 100 - GND
Jarda Pokorny
jerryp@bbs.infima.cz