TECHNICAL NOTES ON THE EEC-IV MCU - Auto diagnostics
TECHNICAL NOTES ON THE EEC-IV MCU - Auto diagnostics
TECHNICAL NOTES ON THE EEC-IV MCU - Auto diagnostics
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8061 CPU (IC-1)<br />
25 I/O1 59 /ST<br />
26 I/O0 60 /PAUSE<br />
27 EXT INT 61 MB0<br />
28 VCC 62 MB1<br />
29 AVSS 63 MB2<br />
30 A10 64 MB3<br />
31 A11 65 MB4<br />
32 A9 66 MB5<br />
33 A8 67 MB6<br />
34 A12 68 MB7<br />
Table 4: 8061 CPU Pinout<br />
81C61/2 RAM/IO/CART (IC-3)<br />
1 OCP4 13 MB4<br />
2 OCP3 14 MB3<br />
3 OCP2 15 MB2<br />
4 OCP1 16 MB1<br />
5 OCP0 17 MB0<br />
6 NC-RCV 18 NC<br />
7 VCC 19 NC<br />
8 NC-\XMT 20 /ST<br />
9 ENA 21 IT<br />
10 MB7 22 DI<br />
11 MB6 23 NC<br />
12 MB5 24 VSS<br />
Table 5: 8361 RAM/IO Pinout<br />
87C61 RAM/IO (IC-7)<br />
1 13 CPU-65, J3-13 MB4<br />
2 /OE 14 CPU-64, J3-11 MB3<br />
3 15 CPU-63, J3-9 MB2<br />
4 GND (?) 16 CPU-62, J3-7 MB1<br />
5 17 CPU-61, J3-5 MB0<br />
6 GND (?) 18<br />
7 KAPWR VCC 19 GND (?)<br />
8 20 /ST<br />
9 21 IT<br />
10 CPU-68, J3-19 MB7 22 DI<br />
11 CPU-67, J3-17 MB6 23<br />
12 CPU-66, J3-15 MB5 24 GND VSS<br />
Table 6: 87C61 RAM/IO Pinout<br />
8763 EPROM (IC-8)<br />
1 J3-22, 1K to +5V /TSTSTB 13 CPU-65, J3-13 MB4<br />
2 J3-16, 10K to +5 /EPROMDIS 14 CPU-64, J3-11 MB3<br />
3 RP0 15 CPU-63, J3-9 MB2<br />
4 GND RP1 16 CPU-62, J3-7 MB1<br />
5 RP2 17 CPU-61, J3-5 MB0<br />
6 RP3 18 1k to +5V VCC, VPP<br />
7 +5 VCC 19 +5V VCC, TEST<br />
Table 7: 8763 EPROM Pinout<br />
Eectch98-Part1.fm<br />
<strong>EEC</strong>-<strong>IV</strong> Technical Notes: Hardware 12 last edited: 9/29/98
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