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DTL H2000 hardware reverse engineering debug headers
Nicolas Noble edited this page Mar 5, 2020
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7 revisions
- CL801 - SBUS - Address 0 to 13 (SPU related?) + !WRs
| ODD | EVEN |
|---|---|
| GND | SA0 |
| SA1 | SA2 |
| SA3 | SA4 |
| SA5 | SA6 |
| SA7 | SA8 |
| SA9 | SA10 |
| SA11 | SA12 |
| SA13 | !SWR0 |
| !SWR1 | ?? |
| ?? | ?? |
- CL802 - SBUS - SBUS Data + !RD
| ODD | EVEN |
|---|---|
| GND | SD0 |
| SD1 | SD2 |
| SD3 | SD4 |
| SD5 | SD6 |
| SD7 | SD8 |
| SD9 | SD10 |
| SD11 | SD12 |
| SD13 | SD14 |
| SD15 | !SRD |
| ?? | ?? |
- CL807 - DBUS Low 16-bits data + RAS0
| ODD | EVEN |
|---|---|
| GND | DD0 |
| DD1 | DD2 |
| DD3 | DD4 |
| DD5 | DD6 |
| DD7 | DD8 |
| DD9 | DD10 |
| DD11 | DD12 |
| DD13 | DD14 |
| DD15 | !DRAS0 |
| ?? | ?? |
- CL809 - DBUS High 16-bits data + RAS1
| ODD | EVEN |
|---|---|
| GND | DD16 |
| DD17 | DD18 |
| DD19 | DD20 |
| DD21 | DD22 |
| DD23 | DD24 |
| DD25 | DD26 |
| DD27 | DD28 |
| DD29 | DD30 |
| DD31 | !DRAS1 |
| ?? | ?? |
- CL811 - DBUS Addresses + CAS + !WR
| ODD | EVEN |
|---|---|
| GND | DA0 |
| DA1 | DA2 |
| DA3 | DA4 |
| DA5 | DA6 |
| DA7 | DA8 |
| DA9 | DA10 |
| DA11 | !DCAS0 |
| !DCAS1 | !DCAS2 |
| !DCAS3 | !DWE |
| ?? | ?? |
- CL813 - VBUS Low 16 bits DATA + ??
| ODD | EVEN |
|---|---|
| GND | VD0 |
| VD1 | VD2 |
| VD3 | VD4 |
| VD5 | VD6 |
| VD7 | VD8 |
| VD9 | VD10 |
| VD11 | VD12 |
| VD13 | VD14 |
| VD15 | GPU-155 (clock?) |
| ?? | ?? |
- CL814 - VBUS High 16 bits DATA + ??
| ODD | EVEN |
|---|---|
| GND | VD16 |
| VD17 | VD18 |
| VD19 | VD20 |
| VD21 | VD22 |
| VD23 | VD24 |
| VD25 | VD26 |
| VD27 | VD28 |
| VD29 | VD30 |
| VD31 | !CS7? |
| GPU-145 (clock?) | ?? |
- CL825 - VRAM1 Address + misc shared signals in bold
| ODD | EVEN |
|---|---|
| GND | A0 |
| A1 | A2 |
| A3 | A4 |
| A5 | A6 |
| A7 | A8 |
| GND | !CAS |
| GND | !RAS |
| !DT/!OE | !WBL |
| !WBU | ?? |
| ?? | ?? |
- CL826 - VRAM2 Address + misc shared signals in bold
| ODD | EVEN |
|---|---|
| GND | A0 |
| A1 | A2 |
| A3 | A4 |
| A5 | A6 |
| A7 | A8 |
| GND | !CAS |
| GND | !DT/!OE |
| OSF | !SE |
| SC | ?? |
| ?? | ?? |
- CL827 - VRAM1 Data
| ODD | EVEN |
|---|---|
| GND | DQ0 |
| DQ1 | DQ2 |
| DQ3 | DQ4 |
| DQ5 | DQ6 |
| DQ7 | DQ8 |
| DQ9 | DQ10 |
| DQ11 | DQ12 |
| DQ13 | DQ14 |
| DQ15 | ?? |
| ?? | ?? |
- CL828 - VRAM2 Data
| ODD | EVEN |
|---|---|
| GND | DQ0 |
| DQ1 | DQ2 |
| DQ3 | DQ4 |
| DQ5 | DQ6 |
| DQ7 | DQ8 |
| DQ9 | DQ10 |
| DQ11 | DQ12 |
| DQ13 | DQ14 |
| DQ15 | ?? |
| ?? | ?? |