(b) Proceeds from the sale of the bonds shall be deposited in a separate fund or account within the state treasury created by the comptroller of public accounts for this purpose. Money in the separate fund or account may be used only to pay for:
(2) the purchase, as authorized by the legislature by general law or the General Appropriations Act, of needed equipment by or on behalf of a state agency listed in Subdivision (1) of this subsection.
(d) While any of the bonds or interest on the bonds authorized by this section is outstanding and unpaid, from the first money coming into the state treasury in each fiscal year not otherwise appropriated by this constitution, an amount sufficient to pay the principal and interest on bonds that mature or become due during the fiscal year and to make payments that become due under a related credit agreement during the fiscal year is appropriated, less the amount in the sinking fund at the close of the previous fiscal year.
(e) Bonds issued under this section, after approval by the attorney general, registration by the comptroller of public accounts, and delivery to the purchasers, are incontestable and are general obligations of the State of Texas under this constitution.
