TI99_22
danwerner21
a 2022 replica of the classic TI/994a, using obtainable parts
Components (105)
| Reference | Value | Description |
|---|---|---|
| Q1,Q3,Q4 | TIS92 | |
| Q2 | 2N3904 | |
| U1 | TIM9904 | |
| U2 | TMS9900 | |
| U3,U15,U22,U24 | 74LS04 | |
| U4,U9 | 74LS32 | |
| U5,U8 | 74LS138 | |
| U6 | 74LS03 | |
| U7 | 74LS08 | |
| U10,U14,U18 | 74LS00 | |
| U11,U41 | 74LS244 | |
| U12 | 74LS373 | |
| U13 | 74LS245 | |
| U16 | 74LS74 | |
| U17 | 74LS194 | |
| U19 | LM2901 | |
| U20 | LM7905_TO220 | |
| U21 | LM2903 | |
| U26-U28 | TMC0430 | |
| U29,U30,U37 | HM62256BLP | |
| U31,U32 | 27C64 | |
| U33 | SN76489 | |
| U34 | TMS9918 | |
| U35,U36,U38 | 74LS574 | |
| U39 | TMS9901 | |
| U40 | 74LS156 | |
| U42,U43 | 74LS367 | |
| U44 | 74LS379 | |
| U45 | 27C010-C | |
| U46 | RC4558 | |
| U47 | 74LS06 | |
| U48,U49 | TIL119 | |
| C1,C9,C11,C58,C73,C75 | 0.001µF | |
| C2 | 22pF | |
| C3,C5,C59 | 22µF | |
| C4,C7,C13,C14,C18,C20,C23-C51,C54,C55,C62,C64,C68,C71,C74 | 0.1µF | |
| C6 | 1µF | |
| C8,C12,C52,C63,C65-C67,C72 | 0.01µF | |
| C10,C15-C17,C19,C21,C22,C53,C60 | 100µF | |
| C56 | 12pF | |
| C57 | 56pF | |
| C61 | 220µF | |
| C69 | 220pF | |
| C70 | 0.022µF | |
| CR1,CR4 | 1N4148 | |
| CR2,CR3 | 1N914B | |
| D1 | LED | |
| H1-H7 | MountingHole | |
| J1 | Reset | |
| J2 | Power LED | |
| J3 | POWER | |
| J4 | UNICORN PORT | |
| J5,J6 | ROM Select | |
| J7 | Sound Clock Select | |
| J8 | AUDIO OUT | |
| J9 | VIDEO OUT | |
| J10 | Joystick | |
| J11 | Keyboard | |
| J12,J13 | I/O Port | |
| J14,J15 | GROM Port | |
| J16 | Rom Select 1 | |
| J17 | Rom Select 2 | |
| J18 | Cassette | |
| L1 | 0.33µH | |
| L4,L5 | 6.8µH | |
| L7 | 5.8µH | |
| L8 | INDUCTOR (BEAD) | |
| L10-L16 | 8.2µh | |
| R1 | 150kΩ | |
| R2,R9,R11,R18,R34,R35,R46 | 1kΩ | |
| R3 | 12kΩ | |
| R4 | 47kΩ | |
| R5-R8 | 22Ω | |
| R10,R26,R45,R52,R53 | 4.7kΩ | |
| R12-R16,R61,R62,R67,R68 | 1KΩ | |
| R17,R48,R50 | 2.2kΩ | |
| R19,R30,R32 | 470Ω | |
| R20 | 270Ω | |
| R21 | 1.5kΩ | |
| R22 | 361Ω | |
| R23,R73,R75 | 5.6kΩ | |
| R24,R27 | 10Ω | |
| R25 | 150Ω | |
| R28 | 470kΩ | |
| R29 | 0Ω | |
| R31,R33 | 75Ω | |
| R36-R40,R49,R51,R54,R56 | 100Ω | |
| R41-R44 | 62Ω | |
| R47 | 3.3kΩ | |
| R55 | 330Ω | |
| R57,R71,R72 | 10kΩ | |
| R58,R60 | 6.8kΩ | |
| R59 | 39kΩ | |
| R63 | 120kΩ | |
| R64 | 2.7kΩ | |
| R65,R66,R76 | 220Ω | |
| R69 | 10KΩ | |
| R70 | 9.1kΩ | |
| R74 | 5.6KΩ | |
| R77 | 15Ω | |
| RN1,RN2 | 10K | |
| SW1 | RAM Size | |
| SW2 | Internal Cart ROM Enable | |
| Y1 | 48.000 MHz | |
| Y2 | 10.7MHz |