Editing EBUS

<div style="float:right">[[File:EBUS - diagram.png|200px|thumb|left|EBUS - diagram ]]</div>

== EBUS ==
Proprietary 78-lines Interface with 54 testpads of the ''partial'' communication between [[South Bridge]] + [[Syscon Hardware]] with [[Starship2]] towards dual [[Flash (Hardware)|NAND]] 15pin (+ 2x VCC + 2x GND) interface.

(in comparison, a [[Teensy 2.0++]] only has 51 lines, not all are useable as programmable I/O)

The lower interface of NAND is exposed complete and also lesser wires/pins than the EBUS.

For this reason, reading/writing to flash is adviced using the <abbr title="Common Flash Interface">CFI</abbr> of the standardised dual [[Flash (Hardware)|NANDs]] (perfectly useable with a [[Teensy 2.0++]]).

== Protocol / line usage ==
* Datastream:
** 16 datalines
** 28 addresslines (only first 18 exposed)
* Controllines: 
** 7x Chip Enable : CE0, CE1, CE2, CE3, CE4, CE5, CE6 (thus splitted into 7 virtual banks but only 3 exposed)
** RBW : I/O R, I/O B, I/O W (only read exposed)
** 2x BWE (not exposed)
** SWE
** Output Enable
** Reset
** Ready
** INT
* Other:
** 3x MODlines (only 1 exposed)
** 4x clocklines (only 1 exposed)
** Tristate

== Notes ==
On {{CEX}}, {{DEX}}, {{ARC}} consoles with NAND, only 256MB (2x 128MB) is used.

On {{DECR}} consoles with NAND, only 256 MB (1x 258MB) is used (although there is an empty TSOP pad for a second one).

This points that the [[EBUS]] needs to address at least 512MB

'''See also:''' flash format , sb_rom_base and SS2_WORK inside [[lv0ldr]]

== Hardware lines / pads ==
{| class="wikitable sortable"
|-
! No. !! TP Name !! Usage !! COK-001 !! COK-002 !! SEM-001 !! Remark
|-
| 0 || JL9300 || RESET || /SB_EBUS_RESET (PIO[7] / E1) || /SB_EBUS_RESET (/EBUSRESETZ / AL29) || /SB_EBUS_RESET (/EBUSRESETZ / P29) ||
|- 
| 1 || JL9301 || MOD0 || /SB_MOD0 (MODZ0 / W8) || /SB_MOD0 (MODZ0 / J30) ||  ||
|- 
| 55 || - || MOD1 || /SB_MOD1 (MODZ1 / V8) ||  ||  || 
|- 
| 56 || - || MOD2 || /SB_MOD2 (MODZ2 / U8) ||  ||  || 
|- 
| 2 || JL9302 || SYSCLK || SB_EBUS_SYSCLK (EBUSSYSCLK / W1) || SB_EBUS_SYSCLKO0 || SB_EBUS_SYSCLKO0 || 
|-
| 57 || - || CLK ||  || SB_EBUS_CLK (EBUSCLK / AJ30) || SB_EBUS_CLK (EBUSCLK / F30) || 
|-
| 58 || - || CLK ||  || SB_EBUS_CLK0[0] (/SB_EBUS_CLKO0 / AD28) || SB_EBUS_CLK0[0] (/SB_EBUS_CLKO0 / G30) || 
|-
| 59 || - || CLK ||  || SB_EBUS_CLK0[1] (/SB_EBUS_CLKO1 / AD29) || SB_EBUS_CLK0[1] (/SB_EBUS_CLKO0 / F29) || 
|-

| 3 || JL9303 || IOR/BE || /SB_EBUS_IOR || SB_EBUS_BE (/EBUSBEZ / AE31) || SB_EBUS_BE (/EBUSBEZ / G29) || 
|-
| 60 || - || IOR || /SB_BUS_IOR (EBUSIORZ / N3) ||  ||  || 
|-
| 61 || - || IOW || - (EBUSIOWZ / N4) ||  ||  || 
|-

| 4 || JL9304 || SWE || /SB_EBUS_SWE (/EBUSSWEZ / M4) || /SB_EBUS_SWE (/EBUSSWEZ / AK29) || /SB_EBUS_SWE (/EBUSSWEZ / N30) || 
|-
| 5 || JL9305 || OE || /SB_EBUS_OE (/EBUSOEZ / L5) || /SB_EBUS_OE (/EBUSOEZ / AK25) || /SB_EBUS_OE (/EBUSOEZ / V30) || 
|-

| 62 || - || BWE0 || - (/EBUSBWEZ[0] / W2) || - (/EBUSBWEZ[0] / AC31) || - (/EBUSBWEZ[0] / G27) || 
|-
| 63 || - || BWE1 || - (/EBUSBWEZ[1] / W3) || - (/EBUSBWEZ[1] / AB28) || - (/EBUSBWEZ[1] / G26) || 
|-

| 64 || - || CE6 || - (EBUSCEZ[6] / L7) || - || - ||  
|-
| 65 || - || CE4 || - (EBUSCEZ[4] / K5) || - || - || 
|-
| 66 || - || CE5 || - (EBUSCEZ[5] / K7) || - || - || 
|-
| 67 || - || CE3 || - (EBUSCEZ[3] / J7) || - (EBUSCEZ[3] / AJ23) || - (/EBUSCEZ[3] / Y27) || 
|-
| 6 || JL9306 || CE2 || /SB_EBUS_CE2 (/EBUSCEZ[2] / J5) || /SB_EBUS_CE2 (/EBUSCEZ[2] / AH23) || /SB_EBUS_CE2 (/EBUSCEZ[2] / Y30) || 
|-
| 68 || CL3005<!--// (cok-001) //--> / CL3002<!--// (cok-002) //--> / CL3012<!--// sem-001 //--> || CE1 || - (EBUSCEZ[1] / J7) || - (EBUSCEZ[1] / AJ24) || - (EBUSCEZ[1] / Y29) ||
|-
| 7 || JL9307 || CE0 || /SB_EBUS_CE0 (/EBUSCEZ[0] / H5) || /SB_EBUS_CE0 (/EBUSCEZ[0] / AL25) || /SB_EBUS_CE0 (/EBUSCEZ[0] / W29) ||
|-

| 8 || JL9308 || ACK/RDY || /SB_EBUS_ACK (/EBUSACKZ / V3) || /SB_EBUS_RDY (EBUSRDY / AH22) || /SB_EBUS_RDY (EBUSRDY / AA29) || 
|-
| 9 || JL9309 || BRDY || SS2_BRDY || SS2_BRDY || SS2_BRDY || 
|-
| 10 || JL9310 || INT || /SS2_INT || /SB_EBUS_INT (/EBUSINTZ / AJ22) || /SB_EBUS_INT (/EBUSINTZ / AA30) || 
|-


| 11 || JL9311 || GND || Ground || Ground || Ground || 
|-
| 12 || JL9312 || GND || Ground || Ground || Ground || 
|-
| 13 || JL9313 || GND || Ground || Ground || Ground || 
|-
| 14 || JL9314 || GND || Ground || Ground || Ground || 
|-
| 15 || JL9315 || GND || Ground || Ground || Ground || 
|-
| 16 || JL9316 || GND || Ground || Ground || Ground || 
|-
| 17 || JL9317 || GND || Ground || Ground || Ground || 
|-
| 18 || JL9318 || GND || Ground || Ground || Ground || 
|-
| 19 || JL9319 || GND || Ground || Ground || Ground || 
|-
| 20 || JL9320 || GND || Ground || Ground || Ground || 
|-




| 69 || - || A27 || - (EBUSADDR[27] / H4) || - (EBUSADDR[27] / AL23) || - SB_EBUS_ADDR0 (EBUSADDR[27] / W27) || 
|-
| 70 || - || A26 || - (EBUSADDR[26] / H3) || - (EBUSADDR[26] / AK23) || - SB_EBUS_ADDR0 (EBUSADDR[26] / W26) || 
|-
| 71 || - || A25 || - (EBUSADDR[25] / V4) || - (EBUSADDR[25] / AC30) || - SB_EBUS_ADDR0 (EBUSADDR[25] / H26) || 
|-
| 72 || - || A24 || - (EBUSADDR[24] / U2) || - (EBUSADDR[24] / AC29) || - SB_EBUS_ADDR0 (EBUSADDR[24] / H27) || 
|-
| 73 || - || A23 || - (EBUSADDR[23] / U3) || - (EBUSADDR[23] / AC28) || - SB_EBUS_ADDR0 (EBUSADDR[23] / H29) || 
|-
| 74 || - || A22 || - (EBUSADDR[22] / U1) || - (EBUSADDR[22] / AE29) || - SB_EBUS_ADDR0 (EBUSADDR[22] / H30) || 
|-
| 75 || - || A21 || - (EBUSADDR[21] / M3) || - (EBUSADDR[21] / AJ29) || - SB_EBUS_ADDR0 (EBUSADDR[21] / P26) || 
|-
| 76 || - || A20 || - (EBUSADDR[20] / N1) || - (EBUSADDR[20] / AJ31) || - SB_EBUS_ADDR0 (EBUSADDR[20] / N27) || 
|-
| 77 || - || A19 || - (EBUSADDR[19] / N2) || - (EBUSADDR[19] / AH28) || - SB_EBUS_ADDR0 (EBUSADDR[19] / N26) || 
|-
| 78 || - || A18 || - (EBUSADDR[18] / L4) || - (EBUSADDR[18] / AJ28) || - SB_EBUS_ADDR0 (EBUSADDR[18] / P27) || 
|-
| 21 || JL9321 || A17 || SB_EBUS_ADDR17 (EBUSADDR[17] / L3) || SB_EBUS_ADDR17 (EBUSADDR[17] / AH27) || SB_EBUS_ADDR0 (EBUSADDR[17] / P30) || 
|-
| 22 || JL9322 || A16 || SB_EBUS_ADDR16 (EBUSADDR[16] / U4) || SB_EBUS_ADDR16 (EBUSADDR[16] / AE30) || SB_EBUS_ADDR0 (EBUSADDR[16] / J29) || 
|-
| 23 || JL9323 || A15 || SB_EBUS_ADDR15 (EBUSADDR[15] / T4) || SB_EBUS_ADDR15 (EBUSADDR[15] / AE28) || SB_EBUS_ADDR0 (EBUSADDR[15] / J30) || 
|-
| 24 || JL9324 || A14 || SB_EBUS_ADDR14 (EBUSADDR[14] / T3) || SB_EBUS_ADDR14 (EBUSADDR[14] / AF29) || SB_EBUS_ADDR0 (EBUSADDR[14] / K29) || 
|-
| 25 || JL9325 || A13 || SB_EBUS_ADDR13 (EBUSADDR[13] / R4) || SB_EBUS_ADDR13 (EBUSADDR[13] / AF28)  || SB_EBUS_ADDR0 (EBUSADDR[13] / K30) || 
|-
| 26 || JL9326 || A12 || SB_EBUS_ADDR12 (EBUSADDR[12] / R3) || SB_EBUS_ADDR12 (EBUSADDR[12] / AG31) || SB_EBUS_ADDR0 (EBUSADDR[12] / L29) || 
|-
| 27 || JL9327 || A11 || SB_EBUS_ADDR11 (EBUSADDR[11] / R2) || SB_EBUS_ADDR11 (EBUSADDR[11] / AG30) || SB_EBUS_ADDR0 (EBUSADDR[11] / L30) || 
|-
| 28 || JL9328 || A10 || SB_EBUS_ADDR10 (EBUSADDR[10] / R1) || SB_EBUS_ADDR10 (EBUSADDR[10] / AG29) || SB_EBUS_ADDR0 (EBUSADDR[10] / M29) || 
|-
| 29 || JL9329 || A9 || SB_EBUS_ADDR9 (EBUSADDR[8] / P4) || SB_EBUS_ADDR9 (EBUSADDR[9] / AG28) || SB_EBUS_ADDR0 (EBUSADDR[9] / M30) || 
|-
| 30 || JL9330 || A8 || SB_EBUS_ADDR8 (EBUSADDR[8] / P3) || SB_EBUS_ADDR8 (EBUSADDR[8] / AH29) || SB_EBUS_ADDR0 (EBUSADDR[8] / N29) || 
|-
| 31 || JL9331 || A7 || SB_EBUS_ADDR7 (EBUSADDR[7] / L2) || SB_EBUS_ADDR7 (EBUSADDR[7] / AJ25) || SB_EBUS_ADDR0 (EBUSADDR[7] / R29) || 
|-
| 32 || JL9332 || A6 || SB_EBUS_ADDR6 (EBUSADDR[6] / L1) || SB_EBUS_ADDR6 (EBUSADDR[6] / AK27) || SB_EBUS_ADDR0 (EBUSADDR[6] / R30) || 
|-
| 33 || JL9333 || A5 || SB_EBUS_ADDR5 (EBUSADDR[5] / K4) || SB_EBUS_ADDR5 (EBUSADDR[5] / AL27) || SB_EBUS_ADDR0 (EBUSADDR[5] / T29) || 
|-
| 34 || JL9334 || A4 || SB_EBUS_ADDR4 (EBUSADDR[4] / K3) || SB_EBUS_ADDR4 (EBUSADDR[4] / AH26) || SB_EBUS_ADDR0 (EBUSADDR[4] / T30) || 
|-
| 35 || JL9335 || A3 || SB_EBUS_ADDR3 (EBUSADDR[3] / J3) || SB_EBUS_ADDR3 (EBUSADDR[3] / AJ25) || SB_EBUS_ADDR0 (EBUSADDR[3] / U29) || 
|-
| 36 || JL9336 || A2 || SB_EBUS_ADDR2 (EBUSADDR[2] / J2) || SB_EBUS_ADDR2 (EBUSADDR[2] / AH25) || SB_EBUS_ADDR0 (EBUSADDR[2] / U30) || 
|-
| 37 || JL9337 || A1 || SB_EBUS_ADDR1 (EBUSADDR[1] / J1) || SB_EBUS_ADDR1 (EBUSADDR[1] / AJ25) || SB_EBUS_ADDR0 (EBUSADDR[1] / V29) || 
|-
| 38 || JL9338 || A0 || SB_EBUS_ADDR0 (EBUSADDR[0] / J4) || SB_EBUS_ADDR0 (EBUSADDR[0] / AH24) || SB_EBUS_ADDR0 (EBUSADDR[0] / W30) || 
|-


| 39 || JL9339 || D15 || SB_EBUS_DATA15 (EBUSDATA[15] / W7) || SB_EBUS_DATA15 (EBUSDATA[15] / AB26) || SB_EBUS_DATA15 (EBUSDATA[15] / J26) || 
|-
| 40 || JL9340 || D14 || SB_EBUS_DATA14 (EBUSDATA[14] / V7) || SB_EBUS_DATA14 (EBUSDATA[14] / AC26) || SB_EBUS_DATA14 (EBUSDATA[14] / K26) || 
|-
| 41 || JL9341 || D13 || SB_EBUS_DATA13 (EBUSDATA[13] / U7) || SB_EBUS_DATA13 (EBUSDATA[13] / AD26) || SB_EBUS_DATA13 (EBUSDATA[13] / L26) || 
|-
| 42 || JL9342 || D12 || SB_EBUS_DATA12 (EBUSDATA[12] / T7) || SB_EBUS_DATA12 (EBUSDATA[12] / AE26) || SB_EBUS_DATA12 (EBUSDATA[12] / M26) || 
|-
| 43 || JL9343 || D11 || SB_EBUS_DATA11 (EBUSDATA[11] / R7) || SB_EBUS_DATA11 (EBUSDATA[11] / AF26) || SB_EBUS_DATA11 (EBUSDATA[11] / R26) || 
|-
| 44 || JL9344 || D10 || SB_EBUS_DATA10 (EBUSDATA[10] / P7) || SB_EBUS_DATA10 (EBUSDATA[10] / AB24) || SB_EBUS_DATA10 (EBUSDATA[10] / T26) || 
|-
| 45 || JL9345 || D9 || SB_EBUS_DATA9 (EBUSDATA[9] / N7) || SB_EBUS_DATA9 (EBUSDATA[9] / AE23) || SB_EBUS_DATA9 (EBUSDATA[9] / U26) || 
|-
| 46 || JL9346 || D8 || SB_EBUS_DATA8 (EBUSDATA[8] / M7) || SB_EBUS_DATA8 (EBUSDATA[8] / AE22) || SB_EBUS_DATA8 (EBUSDATA[8] / V26) || 
|-
| 47 || JL9347 || D7 || SB_EBUS_DATA7 (EBUSDATA[7] / W5) || SB_EBUS_DATA7 (EBUSDATA[7] / AB25) || SB_EBUS_DATA7 (EBUSDATA[7] / J27) || 
|-
| 48 || JL9348 || D6 || SB_EBUS_DATA6 (EBUSDATA[6] / V5) || SB_EBUS_DATA6 (EBUSDATA[6] / AC25) || SB_EBUS_DATA6 (EBUSDATA[6] / K27) || 
|-
| 49 || JL9349 || D5 || SB_EBUS_DATA5 (EBUSDATA[5] / U5) || SB_EBUS_DATA5 (EBUSDATA[5] / AD25) || SB_EBUS_DATA5 (EBUSDATA[5] / L27) || 
|-
| 50 || JL9350 || D4 || SB_EBUS_DATA4 (EBUSDATA[4] / T5) || SB_EBUS_DATA4 (EBUSDATA[4] / AE25) || SB_EBUS_DATA4 (EBUSDATA[4] / M27) || 
|-
| 51 || JL9351 || D3 || SB_EBUS_DATA3 (EBUSDATA[3] / R5) || SB_EBUS_DATA3 (EBUSDATA[3] / AF25) || SB_EBUS_DATA3 (EBUSDATA[3] / R27) || 
|-
| 52 || JL9352 || D2 || SB_EBUS_DATA2 (EBUSDATA[2] / P5) || SB_EBUS_DATA2 (EBUSDATA[2] / AF24) || SB_EBUS_DATA2 (EBUSDATA[2] / T27) || 
|-
| 53 || JL9353 || D1 || SB_EBUS_DATA1 (EBUSDATA[1] / N5) || SB_EBUS_DATA1 (EBUSDATA[1] / AF23) || SB_EBUS_DATA1 (EBUSDATA[1] / U27) || 
|-
| 54 || JL9354 || D0 || SB_EBUS_DATA0 (EBUSDATA[0] / M5 || SB_EBUS_DATA0 (EBUSDATA[0] / AF22) || SB_EBUS_DATA0 (EBUSDATA[0] / V27) || 
|-
|}


{{Motherboard Components}}<noinclude>[[Category:Main]]</noinclude>