1 EXHIBIT 4.2(b) FIRST AMENDMENT TO CREDIT AGREEMENT FIRST AMENDMENT TO CREDIT AGREEMENT (this "Amendment"), dated as of January 30, 2001, among AMERISTAR CASINOS, INC., a Nevada corporation (the "Borrower"), the various lenders party to the Credit Agreement referred to below (the "Lenders"), WELLS FARGO BANK, N.A., as Co-Arranger and Syndication Agent, BEAR STEARNS CORPORATE LENDING INC., as Documentation Agent, DEUTSCHE BANK SECURITIES INC., as Lead Arranger and sole Book Manager and BANKERS TRUST COMPANY, as Administrative Agent (all capitalized terms used herein and not otherwise defined herein shall have the respective meaning provided such terms in the Credit Agreement as defined below). W I T N E S S E T H: - - - - - - - - - - WHEREAS, the Borrower, the Lenders, the Lead Arranger, the Syndication Agent, the Documentation Agent and the Administrative Agent are party to a Credit Agreement, dated as of December 20, 2000 (the "Credit Agreement"); and WHEREAS, the Borrower and the undersigned Lenders wish to provide the amendment provided for herein; NOW, THEREFORE, it is agreed: 1. Section 4.02(A)(g) of the Credit Agreement is hereby amended by adding the following proviso at the end thereof ", provided that the net proceeds of the Permanent Senior Subordinated Notes exceeding $350,000,000 shall not be required to be applied pursuant to this clause (g) to the extent that such net proceeds not so applied pursuant to this proviso do not exceed $25,000,000". 2. Section 4.02(A)(h) of the Credit Agreement is hereby amended by deleting, in the first sentence thereof, "and" at the end of clause (i) thereof, inserting a comma in lieu thereof and adding at the end of the first sentence thereof the following: "and (iii) the net Asset Sale Proceeds received in respect of the Disposition being applied to repay the Term Loans and the then outstanding Revolving Loans shall not be required to be so applied until February 1, 2001." 3. Section 3.03(j) of the Credit Agreement is hereby amended by deleting "on the date of the consummation of the Disposition" and inserting, in lieu thereof, the following: "on the later of the date of the consummation of the Disposition and February 1, 2001." 4. The Borrower hereby represents and warrants that (i) no Default or Event of Default exists as of the Amendment Effective Date (as defined below) after giving effect to this Amendment and (ii) on the Amendment Effective Date, both before and after giving effect to this Amendment, all representations and warranties (other than those representations made as of 2 a specified date) contained in the Credit Agreement and in the other Credit Documents are true and correct in all material respects. 5. This Amendment shall become effective on the date (the "Amendment Effective Date") when the Required Lenders and the Borrower shall have signed a counterpart hereof (whether the same or different counterparts) and shall have delivered (including by way of facsimile transmission) the same to the Administrative Agent at its Notice Office. 6. This Amendment is limited as specified and shall not constitute a modification, acceptance or waiver of any other provision of the Credit Agreement or any other Credit Document. 7. This Amendment may be executed in any number of counterparts and by the different parties hereto on separate counterparts, each of which counterparts when executed and delivered shall be an original, but all of which shall together constitute one and the same instrument. A complete set of counterparts shall be lodged with the Borrower and the Administrative Agent. 8. THIS AMENDMENT AND THE RIGHTS AND OBLIGATIONS OF THE PARTIES HEREUNDER SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK. * * * 3 IN WITNESS WHEREOF, the parties hereto have caused their duly authorized officers to execute and deliver this Amendment as of the date first above written. AMERISTAR CASINOS, INC. By: /s/ Gordon R. Kanofsky --------------------------------------------- Name: Gordon R. Kanofsky Title: Senior Vice President of Legal Affairs BANKERS TRUST COMPANY, Individually and as Administrative Agent By: /s/ Steven P. Lapham --------------------------------------------- Title: Director WELLS FARGO BANK, N.A. Individually and as Co-Arranger and Syndication Agent By: /s/ Casey Potter --------------------------------------------- Title: Vice President BEAR STEARNS CORPORATE LENDING INC. Individually and as Documentation Agent By: /s/ Victor F. Bulzuchelli --------------------------------------------- Title: Managing Director 4 SIGNATURE PAGE TO FIRST AMENDMENT DATED AS OF JANUARY 30, 2001 , TO THE CREDIT AGREEMENT DATED AS OF DECEMBER 20, 2000, AMONG AMERISTAR CASINOS, INC., A NEVADA CORPORATION , THE VARIOUS LENDERS PARTY TO THE CREDIT AGREEMENT REFERRED TO BELOW, WELLS FARGO BANK, N.A., AS CO-ARRANGER AND SYNDICATION AGENT, BEAR STEARNS CORPORATE LENDING INC., AS DOCUMENTATION AGENT, DEUTSCHE BANK SECURITIES INC., AS LEAD ARRANGER AND SOLE BOOK MANAGER AND BANKERS TRUST COMPANY, AS ADMINISTRATIVE AGENT NATIONAL CITY BANK OF INDIANA By: /s/ Mark A. Minnick -------------------------------------------- Title: Senior Vice President THE CIT GROUP/EQUIPMENT FINANCING, INC. By: -------------------------------------------- Title: HELLER FINANCIAL, INC. By: /s/ Robert M. Reeg -------------------------------------------- Title: Assistant Vice President THE SUMITOMO TRUST AND BANKING CO., LTD., NEW YORK BRANCH By: /s/ Stephen A. Stratico -------------------------------------------- Title: Vice President 5 AMMC CDO II, LIMITED, By: American Money Management Corp. as Collateral Manager By: /s/ David P. Meyer -------------------------------------------- Title: Vice President MUIRFIELD TRADING LLC By: /s/ Ann E. Morris -------------------------------------------- Title: Asst. Vice President SRV-HIGHLAND, INC. By: /s/ Ann E. Morris -------------------------------------------- Title: Asst. Vice President SRF 200 LLC By: /s/ Ann E. Morris -------------------------------------------- Title: Asst. Vice President GLENEAGLES TRADING LLC By: /s/ Ann E. Morris -------------------------------------------- Title: Asst. Vice President OLYMPIC FUNDING TRUST, SERIES 1999-1 By: /s/ Ann E. Morris -------------------------------------------- Title: SRF 2000 LLC By: /s/ Ann E. Morris -------------------------------------------- Title: Asst. Vice President BLACK DIAMOND CDO 2000-1 LTD. By: /s/ David Dyer -------------------------------------------- Title: Director 6 CARLYLE HIGH YIELD PARTNERS, LP By: /s/ Linda M. Pace --------------------------------------------- Title: Vice President CARLYLE HIGH YIELD PARTNERS II, LP By: /s/ Linda M. Pace --------------------------------------------- Title: Vice President CARLYLE HIGH YIELD PARTNERS III, LP By: /s/ Linda M. Pace --------------------------------------------- Title: Vice President SIERRA CLO - I By: /s/ John Casparian --------------------------------------------- Title: Chief Operating Office SEQUILS - CUMBERLAND I, LTD., By: Deerfield Capital Management LLC, as its Collateral Manager By: /s/ Matt Stouffer --------------------------------------------- Title: Vice President HIGHLAND LEGACY LIMITED, By: Highland Capital Management, L.P., as Collateral Manager By: /s/ Todd Travers --------------------------------------------- Title: Senior Portfolio Manager HIGHLAND OFFSHORE PARTNERS, L.P., By: Highland Capital Management, L.P., as Collateral Manager By: /s/ Todd Travers --------------------------------------------- Title: Senior Portfolio 7 ELF FUNDING TRUST I, By: Highland Capital Management, L.P., as Collateral Manager By: /s/ Todd Travers --------------------------------------------- Title: Senior Portfolio Manager SL LOANS I LIMITED By: /s/ Todd Travers --------------------------------------------- Title: Senior Portfolio Manager ARCHIMEMDES FUNDING III, LTD., By: ING Capital Advisors LLC, as Collateral Manager By: /s/ Wade T. Winter, CFA --------------------------------------------- Title: Vice President ARCHIMEMDES FUNDING IV (CAYMAN), LTD., By: ING Capital Advisors LLC, as Collateral Manager By: /s/ Wade T. Winter, CFA ---------------------------------------------- Title: Vice President NEMEAN CLO, LTD., By: ING Capital Advisors LLC, as Investment Manager By: /s/ Wade T. Winter, CFA --------------------------------------------- Title: Vice President SEQUILS-ING I (HBDGM), LTD., By: ING Capital Advisors LLC, as Collateral Manager By: /s/ Wade T. Winter, CFA --------------------------------------------- Title: Vice President 8 DEBT STRATEGIES FUND, INC. By: /s/ John M. Johnson --------------------------------------------- Title: Authorized Signatory SENIOR HIGH INCOME PORTFOLIO, INC. By: /s/ John M. Johnson --------------------------------------------- Title: Authorized Signatory MASTER SENIOR FLOATING RATE TRUST By: /s/ John M Johnson --------------------------------------------- Title: Authorized Signatory MERRILL LYNCH SENIOR FLOATING RATE FUND, INC. By: /s/ John M. Johnson --------------------------------------------- Title: Authorized Signatory LONGHORN CDO (CAYMAN) LTD. By: Merrill Lynch Investment Managers, L.P. its Investment Advisor By: /s/ John M. Johnson --------------------------------------------- Title: Authorized Signatory STANDFIELD CLO LTD., By: Stanfield Capital Partners LLC as its Collateral Manager By: /s/ Gregory L. Smith --------------------------------------------- Title: Partner 9 STANDFIELD/RMF TRANSATLANTIC CDO LTD., By: Stanfield Capital Partners LLC as its Collateral Manager By: /s/ Gregory L. Smith --------------------------------------------- Title: Partner WINDSOR LOAN FUNDING, LIMITED, By: Stanfield Capital Partners LLC as its Collateral Manager By: /s/ Gregory L. Smith --------------------------------------------- Title: Partner STEIN ROE FLOATING RATE LIMITED LIABILITY COMPANY By: /s/ Brian W. Good --------------------------------------------- Title: Senior Vice President LIBERTY - STEIN ROE ADVISOR FLOATING RATE ADVANTAGE FUND By: Stein Roe & Farnham Incorporated, as Advisor By: /s/ Brian W. Good --------------------------------------------- Title: Sr. Vice President & Portfolio Manager TORONTO DOMINION (NEW YORK), INC. By: /s/ Gwen Zirkle --------------------------------------------- Title: Vice President EMERALD ORCHARD LIMITED By: /s/ Gwen Zirkle --------------------------------------------- Title: Attorney In Fact 10 STEIN ROE & FARNHAM CLO I LTD., by Stein Roe & Farnham Incorporated By: /s/ Brian W. Good --------------------------------------------- Title: Senior Vice President & Portfolio Manager